He is one freakin smart Gent! He knows we are all sticklers for the small stuff, and wouldn't be able to help ourselves but add comments. Great way to boost the vid in the algo. 😁👍
Very surprised how well-built that is. Between the hinges and the wheel bearings they clearly made it to last, which is the exact opposite of 99.99% of products on the market today
My cynical self fears that they've put some form of point of failure in the refrigeration system (either the mechanical system or the circuit board) to make us buy a new one after warranty expiry. However I hope that's not the case because this looks great.
this couldn't be emphasized more. japan has some awesome designers @makita. between this and the fanned cooler jacket i'll just have to buy into their ecosystem once i take part in the economy again
It actually makes sense for it to use a reverse cycle for heating instead of a conventional heating element, since using a heat pump will move somewhere around 2.5x the heat energy per unit of input energy, so for the same heating power you’d get substantially more battery life out of it.
This. Heat pumps are incredible. Ex it's more efficient to burn coal/gas in a power plant which drives a heat pump to heat a house, than it is to just burn the same thing it in a furnace to heat the house directly. Seems to violate thermodynamics, but it doesn't.
@@spencerkim9494 I just took a peak at my old textbooks and yeah, you're right. I completely forgot you can achieve greater than 100% efficiency 🤣They may be using a resistive heater because reversing the flow in a heat pump precludes the use of check valves.
My favorite lab in engineering was a transparent tank full of freon. You could crank a wheel which changed the volume on the tank. The whole thing was in a constant temp bath and when you cranked the wheel and shrank the volume the freon would start raining out of its own gas. There was some experimental crap involved too but turning the wheel was fun. 😅
My favorite lab was compressors. They had recently completed renovations on the building and the professor was too stupid to realize the compressor needed to be hardwired for 240. We stood around and looked at it while the TA explained what it should be doing for 10 minutes and then we left. Of course, writing the report was brutal, but I had a spare 3 hours on lab day.
I have this one.... quite happy with it, keeps a whole 30 can carton of Great Northern (Aussie beer) frosty cold even on a hot Queensland summers day and gets about 30hrs (once cold) on two 6ah batteries...
i run a bar fridge, on a 4000w inverter. 60 cans. & 4 t bones.. or half a roo..ausie . s.a. moonta. ford s/duty, 4x4, 4.2tdi, 700nm.. 13 lt 100.. not jap..
I used my little hammer for putting a roll pin into the parking brake handle on a bus. That bus is now rolling around the mean streets of Chicago thanks to it.
That's exactly why I bought into Ryobi as a homeowner. I don't need the absolute strongest tools (though they aren't weak by any means), but they make all sorts of useful stuff that share the same batteries!
Growing up in Japan in the 80s/90s, my folks had a Nissan Vanette that had a built in heater/cooler in the 2nd row seating area. It was great to keep the hot cans of coffee from the vending machines hot, or the sodas cold. Freaking love Japan. Spent the best 12 years of my life there.
Thank you Japan for yet another sensible product. The plug in coolers are OK but they are ambient temperature dependant. They tend to reduce the temperature by about 16c. Which is fine if the temperature is around 22c but not much use when it gets hotter. When I saw an actual compressor I decided, that is the one for me, it's a fridge, not a cooler, that is what we need.
@@harrywalker968I'm always trying to sell myself as a technical writing "fixer." Basically, chinglish/whatever in, make a best informed guess, nice piece of technical English out. Still no takers, even when offered for free. 🤷♂️
i was not there, so i cannot verify. i come from winnipeg, i dont live there now, but there is a music festival, "folk fest" for dirty hippies and drugged out youngins, and one year at "pope's hill" a yelling conversation got going "lets do a slip and slide!" "i've got the garbage bags!" "anyone have dish soap?" "i got dish soap!" "and i got a cooler to ride" and these lunatics would rip down the hill on a cooler on a track made of lubed up garbage bags pegged into the ground. i have it from like 5 sources, and it wouldnt be the craziest shit i have seen at a music festival :)
My father in law has a plug-in cooler and thinks it's the best thing ever - I don't know if it is compressor- or peltier-based, but in my opinion it does a great job keeping your food solidly in the danger zone, too warm to be cold and too cold to be warm.
Now that I've realized it's an actual refrigerator I feel kind of bad that nobody bought these things because it means we're never going to see them again
Something happened over in China and there are tons of DC powered compressor-based coolers. More will likely come out. It's Makita's mistake for selling these for as much they were asking for. Massive joke at $800+ retail and that's without the expensive batteries to make it useful.
@@arduinoversusevil2025 the problem was having a beer with Ave is you would never get to see his face. Now having a beer with the real man., that would be exceptional time spent. I may have a story or two that could pretty much stop anybody.
In fact, that cooling element is named Peltier and that's absolutely correct. The Seebeck effect describes the current that is created by a temperature difference. The Peltier effect describes the heating/cooling when current is applied.
I have one of these coolers, and it's a nice piece of gear. Particularly handy on long road trips. The one complaint I have is that plugging the unit in doesn't charge the batteries, which means you have to take a charger along and pull the batteries to charge them, which is a pain. Seems like it shouldn't have been that difficult to integrate a charger.
The Alpicool fridges take a 5.2/7.8/15.6Ah lithium battery and charge off the vehicle 12v. The 15L one is perfect for day use and costs about 1/4 of the makita.
I can't think of one be it Milwaukee DeWalt or Makita product like this or stereo otherwise novelty products that is dual power sourced that charges the batteries. Thatd make to much since and when the charger you have takes a shit you wouldn't have to hand over $80 for a new one. They can't have that.
NiCd batteries were simple to charge. Ah , the Good Olde Days. But since then , battery-cell chemistry has evolved into a more complex & *_finicky_* beast. Yes they've higher V and more power , and last longer , but also can _now_ _Go_ 💥 _b-BOOM_ 🔥🚘🔥⌚🔥📱🔥 ! LiOn & similar chargers ain't yer granpa's charger no more. They now are complex _Battery_ _PACK_ Management SYSTEMS that monitor *each* *individual* cell of a Pack , including the ambient room temperature as well as cell temperatures , etc. Adding that capabilty could easily cost another $25-50 to the price ( which , personally , I'd pay . But they figure you've likely got 2 or 3 chargers already so why bother ? )
The Seebeck effect is what makes a thermocouple work. The difference in temperature across a piece of metal creates a voltage difference. Measure the voltage difference from one end to the other and you know the temperature.
@@EddieTheH Anddd Nope! This cooler uses a resistive wire to heat the box and uses the refrigeration cycle to cool the box. You can see the two giant relays and the HEAT+ and HEAT- terminals on the side PCB.
AvE is actually wrong! The Seebeck effect is when electricity is created in a thermocouple. The Peltier effect occurs when a temperature difference is created between the junctions by applying a voltage difference across the terminals. The cooler uses the Peltier effect for cooling.
For a fleeting moment I had high hopes in peltiers. stacked several dozen together only to find at the end of the day a gallon of cool water and an energy bill to be embarrassed of. I had discovered these compact compressors and bought a lesser known brand of ice chest with it built in to take out. I had yet to do so by now as in initial testing, it could get sodas cold enough to the point they explode, I've enjoyed taking it on every trip since then. Mine didnt come with the ease of slotting batteries into, but after testing it to use 50 and 30 watts in normal and eco respectively, figured I could use any lithium battery or even a small solar panel.
I once spent a whole year working with a manufacturing engineer to make a Peltier-heated device to affix thermal glued components to circuit boards. Almost a total fail, as the time spent per unit application was *far* too slow for a production line. We gave up on that concept and went with good ol' resistive heaters.
The liquid refrigerant boils in the evaporator cooling the compartment, and condenses in the condenser turning back to a liquid cooling off by those fans. The refrigerant liquid goes form liquid to gas when it passes through the capillary tube and that bullet shaped copper cylinder is a filter drier filled with silica beads.
Well... The further battery symbol is for the further battery. If everyone would put that much logic into their devices, you would not have questioned it... I wonder: Does it happen to charge the batterias if and when connected to AC ? That would be lovely, right ? Like a fridge with automatic redundant power supply for the intermittent supply areas.
Battery packs do not need location indicators, the top battery indicator indicates the battery furthest away from the screen and the lower battery indicator indicates the battery closest to the screen. Love your videos!!
Technical details: Peltier modules are a bunch of diodes places between two plates. They work in both directions.... you can push electricity through them to have a heat flow (or produce cooling, your choice).... you can run them the other way and if you create a heat flow then it will generate electricity for you. A Peltier module is a machine, whereas the Seabeek effect is just a physics principal, not a thing you can use. This last point I am fuzzy on so google if you care, but Seebeck effect may not be related to a Peltier module and instead be related to a thermocouple. Thermocouples are neat in their own way but different from Peltier modules because Thermocouples have no diodes, they are literally just two different metals mashed together, and they create a tiny electrical signal related to their temperature that you measure with a meter.
Nope, Peltiers are a whole bunch of thermocouples between 2 plates. You can reverse the voltage on a peltier element and the hot and cold side will swap. If it where diodes instead of thermocouples reversing the voltage would lead to nothing, you know the thing that defines a diode. You can make peltier elements with N P junctions, but the ones on the usual online scumbacks use the thermocouple version.
Good explanation on the refrigeration cycle. Also no receiver tank on that unit, large copper section in front of compressor is a filter drier and coming off of the bottom of that is a capillary tube that meters the refrigerant to the evaporator very small inside diameter, no expansion valve. Overall impressive unit.
I've found that on all of these portable fridges that the indicated/setting temperature is the surface temperature of the walls (since the fridge area is completely sealed off), not the actual temperature of the food contained therein. I usually set mine to 26* (moon-lander's units) if I want 32-33* beer.
if you need quick cooling you need better conduction. If you put a little bit of water in the bottom it helps lots about 3 or 4 cm. Just don't freeze it. And watertight containers. But most cans are
I actually really like the style of this design. I've been thinking about making a wooden icebox but with thermoelectric modules to be a slight refrigerator and not needing as much ice. Hot damn, it actually has vapor compression in it!! I didn't see that coming!
Did ya know they made a cooler box for your lunch that snaps together with your rolling tool storage cart? GENIUS. Also! The refrigerants these days are built to be different in one key way: It doesn't explode. Propane and such were originally used for those fancy victorian refrigerators, but the kitchen staff often complained about the cook dying when he lit the stove.
That’s not strictly true. Original refrigerants were explosive in the ‘30’s. Then they were tired of explosions, so moved to HFC’s which turned out to be not highly toxic or flamable, but God-awful for the environment ( 1 molecule of R-22 can destroy 100,000 molecules of Ozone and can stay in the atmosphere for decades) then more recently developed refrigerants have gone back to butylethylene and propane, which are explosive but thanks to modern safety standards and higher quality of materials are much less likely to leak, so on balance are much safer.
True, though we are using R600A (isobutane) in a ton of modern chest freezers and small fridges. My understanding is there is a limit in number of oz of the stuff allowed, so it's only used for smaller things... but that's why you can buy like 3 7-cuft small chest freezers for the price of a single >7 cu ft one which does *not* use the cheap R600a.
Thank you for this detailed teardown. This fella used to go for $1000+ a few years ago but I've seen around the $500 level latly now that the 50L model is out. That one cane use XGT and LXT batteries and has a little basket on top to have a fridge/freezer setup. For what the Yetis and Orcas cost I like the idea of the 20L model since the 50L is more than a grand for now.
For all the years I've been watching your videos they are just as great as the first weird encounter in this vast interwebs I had with one of your old but goodie vids lol keep it up man, and salutations from a boiling Texas 🤙
Also, reason for why you can’t run it upside down is because the oil in that compressor needs to stay in the compressor for lubrication of all the moving parts
My dad used to have an old Toyota Minivan like the old box/cab over looking ones. That van had a big center console between the front seats that had a box similar to this, it held food and drinks and had the option to keep them either hot or cold. It was an awesome thing to have in Arizona, especially as a traveling salesman.
to keep the coffee warm you made in the Makita coffee maker. now all they need is the sandwich maker heated press with interchangeable waffle plates. they do that and I might consider changing over from Milwaukee.
First thing i noticed was those hinges. Even from down here in US via screen pixies, i thought they looked nice. As you dug in, looked to be a pretty good rig.
funny, isn't it? Manufacturers usually go to great lengths to hide actual fasteners and fittings like that. When they leave them exposed we go "ooh! quality!" - Or is that just the enginerds?
I did a project with peltier modules in college. How I understood it was between two ceramic plates are a grid of wires where two different metals are welded to each other and evenly dispersed across the the plates in the same orientation. As electricity flows through them electricity excites the welds in the same fashion that a cylinder of air being compressed heats up and when electricity flows the opposite direction it’s as if the cylinder of air is having its volume expanded. They are very fascinating to hold while energized. The more effectively you cool the hot side the colder the other side becomes in vice Versa however their energy effectiveness is nothing compared to an hvac/ refrigerator unit. For small projects they work fine but fine temper control is difficult which is why they are not used to cool components on computers.
I had a college style micro fridge/freezer in an 18 wheeler. I was surprised that it only drew about 75w while running, according to the DC/ac converter display. If only kobalt offered a cooler like this I would be all in. 😬🤣.
Funny thing about 1234yf. It's "mildly flammable" We were running an a/c test in the wind tunnel at work and blew a line. It's as mildly flammable as propane let me tell ya
So they've deleted the whole reason to not use propane. I know guys that were using propane for R12 systems, and it is a highly effective refrigerant. More effective than R12 😂
Not an expert, but read something on the recent history of car refrigerants. IIRC R-12 was something like 500x as bad for the ozone as CO2, so 134a at 50x came through.Then R1234yf at only several times as bad as CO2 came about. Now, R700 is the modern flavor of choice for refrigeratant, while only equal to CO2 at damaging the ozone it functions at much higher pressures. This requires higher quality components, and is currently much more expensive when comparing the refrigerants. The article mentioned it is already in some European models. The powers that be (depending on the local) have not outlawed the production of 134a so our non late model vehicles will have plenty of supply for the future. One issue people talk about is modern refrigerants are flammable unlike the classic R12/134a hence the warning sticker on this Makita cooler/heater.
R12 got the axe because it depleted the Ozone (also has a GWP of 2400 but they didn't care about it then). Then they went after R-134a because it has a Global Warming Potential of 1300. 1234-YF has a GWP of only 4 even though when they passed all the laws to force cars over to it, it magically had a GWP of less than 1. The new stuff they're testing in Europe is R744 which is CO2 based so its GWP is 1. It's all a game.
Happy to see a BOLTR today - spending my Friday night having a brew listening to my favorite RUclipsr. He lives really close to my mom's house actually - small world.
High pressure gas is condensed into liquid then the liquid is sprayed through an orifice evaporating the liquid into superceded gas. The gas obsorbs the heat and returns the super heated gas back to the compressor. Then the cycle repeats removing heat in the cooler area and transferring it to the high pressure gas side via the compressor into the condenser coil. The fan blowing across the condenser coil removes the heat from the super heated gas turning it into a subcooled liquid.
Marlboro Cigs offered a similar Coleman- made unit to all those whom had saved up a right lungs-worth of their cancer coupins in the late 90's. My foreman, often found standing on the loading dock with a smoke in one hand and patch on his neck, was easily able to acquire one. Promptly sold it to me for 50 bucks when his bookie's gorilla came 'round for his Vig . (the man had too many bad habits at once). The cooler signaled coolness more than it actually was capable of but, in the Syracuse winter, the heating function DID keep ones beer from freezing... Peltier / plug in 12v.
I recently brought a 12v fridge/freezer made by a company called brass monkey. Its pretty heavy on power consumption but keeps things frozen and cold when the power goes out at least. That thing looks pretty decent and the battery arrangement seems pretty simple.
I have same brand here, but the 25L version. zero complaints at all. Lives in the car on a second battery (deep cycle), will go for 2-3 days on 75Ah before low voltage protection kicks in. 2nd battery charges via alternator when cars running.
@@dragpixyeah I have 15L Mobicool one and that also seems to be on similar level on power. I would not run Peltier-box in a car overnight on road trips, but with compressor cooler just no issues. Basically drops the voltage of 70Ah battery for 0.1-0.2V overnight so no worries for starting the next day. It runs few minutes about once in an hour or twice if you open it.
Propane actually works better than any of the fluorocarbons. Companies just don't use it in Murica cause it's highly flammable. Very common in Europe and elsewhere. Also known as R290.
Hydrocarbon based refrigerant is starting to be used more in the US now. I think there's a certain volume limit that can be used for indoor residential. My new fridge uses R600a I think it was, it's a butane based refrigerant.
I have an Alpicool branded car fridge with similar innards though it does not have battery holders, only runs on external 12 volts. A really skookum choocher, very efficient (unlike the Peltier coolers) and can even go down to -20 degreer Celcius. I use it in my car and at the cabin where there's no mains power, just solar panel and batteries. I put my stuff in the cooler at home, plug it in the cigarette lighter in the car when driving to the cabin and then just take it out of the car and plug it into the solar batteries.
They banned the refrigerants that are most active in catalyzing the breakdown of the ozone layer and the hole (in the southern hemisphere) closed back up. Skin cancer rates in australia have plateaued or slightly fallen as a result. It's not an example of the models being flawed, it's an example of government activity interrupting a trend. Same with acid rain in the US North East/part of Canada where most Canadians live.
Yeah. I can understand the skepticism around the massive complexity of climate models, and the quality of data fed into them. But acid rain and ozone depletion were pretty low dimensional problems with well understood causes. Nothing to be skeptical about. And barely any modelling needed.
yeah exactly. saying you survived the whole in the ozone while completely ignoring the active work that went into fixing it is just ignorant, not surprised though.
You'd exspect a steep decline being that today the amount of time people spend outside has fallen alot and the chemicals we put on our bodies and clothing supposedly moved away from most of the real nasty cancer causing stuff.. so I wouldn't contribute that to the ozone layer being restored
@@jim4556 Skin cancer can take years to spread. It's more common in the elderly and CFCs were banned in the 90's. So today's 65 year olds spent their teens, 20's. and early 30's getting blasted with extra UV and just because that damage has declined that doesn't mean the bill isn't coming due.
@@ProtosR B.. bbb... but we can measure the Ozone concentration directly. And we understand the relationship between Ozone and UV clearly, and we understand the relationship between UV and skin damage well. Can you prove beyond a shadow of a doubt that it lowered the skin cancer rate? Of course not. But you can't prove the sun will come up tomorrow either.
You're explanation of the refrigerant cycle is pretty good. I would say that, the gas needs to get hot first through compression, be physically cooled in the condenser, and as it travels into the evaporator, the diameter of the pipes increased, allowing the gas to expand, the pressure to drop, and now it's ready to absorb energy, or cool.
@@jeremyt7722 I have used Bosch, Makita, Milwaukee and at least the DDF484 drill from Makita is very underwhelming. They have issues with electronics and they marketed the "metal case of the gearbox" to be durable but the gears inside were plastic and stripped completely. Meanwhile Bosch had plastic in the outside case that never broke anyway but the gears inside were metal and they Didn't break either....
I would like to see a BOLTR on a modern hobby grade radio control car. I am neck deep in that hobby, and I'm blown away by how these things are built now.
I love the idea of TEC or peltier units...(used them lots) it's just they are so darned inefficient for cooling... so I like to see real hvac units miniaturized for mobile use 😁
@@WeighedWilson trade off would be size, weight, complexity and expense and that a compressor won't be able to go much above 60 / 70c. Already have the size, complexity, expense and weight covered as it is needed for cooling other than one extra expansion valve IIRC. Adding a separate resistive heater and control circuitry in this case may even be more expensive.
I was looking for this comment. You already have a heating unit built into the cooler, just add one valve and it heats up! (Technology Connections YT Creator taught me that😂)
@@inh415not just that, but you don't need this to be hot enough to cook food, that's what the 18V microwave, coffee pot, and kettle are for. This just needs to get hot enough to hold food at temperature above the danger zone for bacterial growth.
For Part 2, it'd be interesting to know how well two Deep Cycles in parallel (or even just one), can run it from the cig adapter... ALSO, might need to check the manual, but perhaps it's meant to do the heavy lifting while plugged in, and then the batteries are for more for station keeping duty? And does this _also_ double as a battery *charger* for the Makita packs? (when the adapter is connected)
The ozone layer issue was solved, by doing away with r12. The chemistry is easy to follow, i encourage you to read up on it. It's very real, and if you are serious in your doubt, you can experiment with it on your own.
Every time I fly down there for a conference all I can do is shake my head. They even have those flippin signs in the elevators. The elevators! Crazy haha
These proper refrigerators have been available for going on 30 years. My uncle used to drive truck in EU, he had one of these with a proper fridge compressor. The issue was the price was over a grand at that time which makes it 2.5k now. So due to time and tech improvement as well as manufacturing improvements. You can get these for 500 and under now. Crazy when you think about it.
You may have survived the hole in the ozone layer, but in this country we have burn times measured in single digit minutes in summer, and one of the worst skin cancer rates in the world. So I'm pretty happy with efforts to avoid making it worse.
Note the box says 18 volt, not 40 volt. It uses 2 batteries but only drains one at a time so you have time to swap one out to charge. You never need more then 2 batteries, get the 5 or 6 amp batteries though if you want them to last the work day. Run at 5⁰c for best longevity. 0⁰c cranks it up a bit faster.
...I have a Koolatron (maybe 12-15yrs. old now) thermoelectric cooler in my work van. It isn't as speedy as I imagine this thing is, but she will bring room temperature drinks nice and cool (one aspect the the thermoelectric coolers that isn't as nice as a refrig type, is that they operate on an ambient differential...so the warmer outside the cooler, the less it cools inside the cooler). ...now on the heating side (just revers the polarity) and it gets quite hot inside...I've warmed up (by lunch time) some lasagna the other day in it. I also like the ease of repair to the thermoelectric coolers though, also operate in about any angle you like which is perfect for portable use...unlike the 110v types that have PSU's and other electronics...they simply run 12vdc into a fan, and some electrical overload protection and then right to the 'chip'...not a circuit to be found (at least in mine anyway). The old girl spun a bearing in the fan, and I accidentally cracked the ceramics in the chip putting it back together...but both items came to about $40CAD and about an hour to swap the busted bits out...which effectively makes it a brand new cooler as those are the only working parts of them. ...I would be interested to see how this handles field work with that compressor and all, to me a weakness on this would be that circuit board (as well as the overall cost of the thing, as my Koolatron was about a hundred and a half back in the day and has cost me $40 since)...I really like the battery operation as I don't have that on mine.......yet lol... ...it's a pretty cool and well built bit of kit, but due to it's 'need to be fairly stable' nature of the pump...It may be best left in the truck. .......................however, it does lend to draggin' your beers all around the house and yard with you...always a cold beer within reach!
Japan = ichiban
ichiban >= itchybum
Konnichiwa, Ohayo!
Ecchi bum
Yeah… I hate it when I have an itchy bum… oh wait 😂
Confucius say, man who go to sleep with itchy bum, wake up with smelly finger.
No labels needed, the power bars are oriented the same way as the batteries. Sweet unit!
He is one freakin smart Gent! He knows we are all sticklers for the small stuff, and wouldn't be able to help ourselves but add comments. Great way to boost the vid in the algo. 😁👍
“Orientated”
Racist.
Was thinking the same thing it seemed obvious.
Yuuuuup
Y’all so smart
Very surprised how well-built that is. Between the hinges and the wheel bearings they clearly made it to last, which is the exact opposite of 99.99% of products on the market today
My cynical self fears that they've put some form of point of failure in the refrigeration system (either the mechanical system or the circuit board) to make us buy a new one after warranty expiry. However I hope that's not the case because this looks great.
Well yeah, it was also 800 DOLLARS 😂.
was expecting it to be a JAPAN MARKET item that "made it out" to the rest of the world
Makita doesnt make junk.
this couldn't be emphasized more. japan has some awesome designers @makita. between this and the fanned cooler jacket i'll just have to buy into their ecosystem once i take part in the economy again
It actually makes sense for it to use a reverse cycle for heating instead of a conventional heating element, since using a heat pump will move somewhere around 2.5x the heat energy per unit of input energy, so for the same heating power you’d get substantially more battery life out of it.
This. Heat pumps are incredible. Ex it's more efficient to burn coal/gas in a power plant which drives a heat pump to heat a house, than it is to just burn the same thing it in a furnace to heat the house directly. Seems to violate thermodynamics, but it doesn't.
@@SafetyLucasheat pumps are very easily greater than 100% efficient
@@spencerkim9494 I just took a peak at my old textbooks and yeah, you're right. I completely forgot you can achieve greater than 100% efficiency 🤣They may be using a resistive heater because reversing the flow in a heat pump precludes the use of check valves.
@@SafetyLucas it’s probably a resistive element because a reversing valve would be a point of failure
@@ihatejoze Isn't the entire refrigerating unit a point of failure in a box that's mobile?
My favorite lab in engineering was a transparent tank full of freon. You could crank a wheel which changed the volume on the tank. The whole thing was in a constant temp bath and when you cranked the wheel and shrank the volume the freon would start raining out of its own gas. There was some experimental crap involved too but turning the wheel was fun. 😅
My favorite lab was compressors. They had recently completed renovations on the building and the professor was too stupid to realize the compressor needed to be hardwired for 240. We stood around and looked at it while the TA explained what it should be doing for 10 minutes and then we left. Of course, writing the report was brutal, but I had a spare 3 hours on lab day.
The cranking demo probably gave you way more lasting knowledge than ten lab reports lol. Love a good demo setup.
That’s what i love about science class. You get to put your hands on stuff
I have this one.... quite happy with it, keeps a whole 30 can carton of Great Northern (Aussie beer) frosty cold even on a hot Queensland summers day and gets about 30hrs (once cold) on two 6ah batteries...
Thank you for that bit of information
Wauw that's looooong, but you can pre cool the thing on a wall outlet :)
No love for the lemon squash?
i run a bar fridge, on a 4000w inverter. 60 cans. & 4 t bones.. or half a roo..ausie . s.a. moonta. ford s/duty, 4x4, 4.2tdi, 700nm.. 13 lt 100.. not jap..
@@Damicske precools off the Ute's 12v socket on the way to the bottle shop too...
I used my little hammer for putting a roll pin into the parking brake handle on a bus. That bus is now rolling around the mean streets of Chicago thanks to it.
Thank you David!
Chuck Norris once pissed in a semi-truck's fuel tank as a joke. Today that truck is known as Optimus Prime!
@@cmdrclassifiedI pissed in my trucks tank, and it doesn’t run…
@@gunner4544Thereby confirming that, you sir, are not Chuck Norris! 😅
Loving that you can read your comment multiple ways. It's rolling around the streets because the park brake is still broke!
I love how Makita and Ryobi have just the most random items in their product lines
And yet they are fucking useful.
why did you do that
That's exactly why I bought into Ryobi as a homeowner. I don't need the absolute strongest tools (though they aren't weak by any means), but they make all sorts of useful stuff that share the same batteries!
Ryobi have a condom warmer
Growing up in Japan in the 80s/90s, my folks had a Nissan Vanette that had a built in heater/cooler in the 2nd row seating area. It was great to keep the hot cans of coffee from the vending machines hot, or the sodas cold. Freaking love Japan. Spent the best 12 years of my life there.
as a kid we had a Toyota minivan that had a icebox for a centre console PS it was a MID engines SUPERCHARGED AWD ----- MINI VAN
Thank you Japan for yet another sensible product.
The plug in coolers are OK but they are ambient temperature dependant. They tend to reduce the temperature by about 16c. Which is fine if the temperature is around 22c but not much use when it gets hotter.
When I saw an actual compressor I decided, that is the one for me, it's a fridge, not a cooler, that is what we need.
and the Chinese version of a fortune 500 company
if it was chinese,the symbols would not be there or be horizontal, not vertical.. chinese instructions,,waste of tree..
@@harrywalker968 Chinglish instructions are the best part of buying chinese crap, a fine use of tree.
@@harrywalker968I'm always trying to sell myself as a technical writing "fixer." Basically, chinglish/whatever in, make a best informed guess, nice piece of technical English out.
Still no takers, even when offered for free. 🤷♂️
I was referring to the source of the compressor.
For $800 it ought to be 2-meters tall, 1-meter wide, covered in brushed stainless, and be plugged into the outlet in my kitchen.
Don't forget about the ice dispenser that helps to relieve the pain of a swollen toe that for a second had to hold its weight
would like to know where to get a fridge WITH stainless anything for $800 CDN peso's
"how fast can you get that makita cooler up to? those bearings are huge!"
"depends how many beers are left in her, and how many have gone into me"
i was not there, so i cannot verify. i come from winnipeg, i dont live there now, but there is a music festival, "folk fest" for dirty hippies and drugged out youngins, and one year at "pope's hill" a yelling conversation got going "lets do a slip and slide!" "i've got the garbage bags!" "anyone have dish soap?" "i got dish soap!" "and i got a cooler to ride" and these lunatics would rip down the hill on a cooler on a track made of lubed up garbage bags pegged into the ground. i have it from like 5 sources, and it wouldnt be the craziest shit i have seen at a music festival :)
My father in law has a plug-in cooler and thinks it's the best thing ever - I don't know if it is compressor- or peltier-based, but in my opinion it does a great job keeping your food solidly in the danger zone, too warm to be cold and too cold to be warm.
Now that I've realized it's an actual refrigerator I feel kind of bad that nobody bought these things because it means we're never going to see them again
Something happened over in China and there are tons of DC powered compressor-based coolers. More will likely come out. It's Makita's mistake for selling these for as much they were asking for. Massive joke at $800+ retail and that's without the expensive batteries to make it useful.
In the history of the internet is there ever a person who you'd more want to have a beer with than Ave. Cool video😆
Ain't that the stone cold truth!! 🍻
Gets old fast. Ask the Dewclaw. Oh wait, he's fucked right off!
@@arduinoversusevil2025sounds like you've applied either too little or too much ethanol
@@arduinoversusevil2025 I miss that guy. It must be hard for him to fix your bumblefuckin wiring over the phone.
@@arduinoversusevil2025 the problem was having a beer with Ave is you would never get to see his face. Now having a beer with the real man., that would be exceptional time spent. I may have a story or two that could pretty much stop anybody.
In fact, that cooling element is named Peltier and that's absolutely correct. The Seebeck effect describes the current that is created by a temperature difference. The Peltier effect describes the heating/cooling when current is applied.
There we go. Someone said it. Seebeck-thermistor peltier-peltier
@@jasondonatella6820 Wikipedia helps the ignorant 😎
I have one of these coolers, and it's a nice piece of gear. Particularly handy on long road trips. The one complaint I have is that plugging the unit in doesn't charge the batteries, which means you have to take a charger along and pull the batteries to charge them, which is a pain. Seems like it shouldn't have been that difficult to integrate a charger.
blimey that seems like an obvious omission
The Alpicool fridges take a 5.2/7.8/15.6Ah lithium battery and charge off the vehicle 12v. The 15L one is perfect for day use and costs about 1/4 of the makita.
I can't think of one be it Milwaukee DeWalt or Makita product like this or stereo otherwise novelty products that is dual power sourced that charges the batteries. Thatd make to much since and when the charger you have takes a shit you wouldn't have to hand over $80 for a new one. They can't have that.
NiCd batteries were simple to charge. Ah , the Good Olde Days.
But since then , battery-cell
chemistry has evolved into a
more complex & *_finicky_*
beast. Yes they've higher V and
more power , and last longer ,
but also can _now_ _Go_ 💥
_b-BOOM_ 🔥🚘🔥⌚🔥📱🔥 !
LiOn & similar chargers ain't
yer granpa's charger no more.
They now are complex _Battery_
_PACK_ Management SYSTEMS
that monitor *each* *individual*
cell of a Pack , including the
ambient room temperature as
well as cell temperatures , etc.
Adding that capabilty could
easily cost another $25-50 to
the price ( which , personally ,
I'd pay . But they figure you've
likely got 2 or 3 chargers already
so why bother ? )
@@procrastinator1842 but can it heat?
The Seebeck effect is what makes a thermocouple work. The difference in temperature across a piece of metal creates a voltage difference. Measure the voltage difference from one end to the other and you know the temperature.
We've been giving Monsieur Peltier too much credit all this time!
I learned this when I learned how radioisotope thermoelectric generators worked one time when I was deep down the Wikipedia rabbit hole
@@GhostRyderFPV Nope, it's the Peltier effect this fridge uses. AvE is actually wrong! 😮
@@EddieTheH Anddd Nope! This cooler uses a resistive wire to heat the box and uses the refrigeration cycle to cool the box. You can see the two giant relays and the HEAT+ and HEAT- terminals on the side PCB.
AvE is actually wrong! The Seebeck effect is when electricity is created in a thermocouple. The Peltier effect occurs when a temperature difference is created between the junctions by applying a voltage difference across the terminals. The cooler uses the Peltier effect for cooling.
Makita is doing wonders for outdoor workers between this and the Makita microwave
Let's not forget the coffee pot.
Yes, my ex wife likes the rechargeable dildo.
@@mazman117 How could we forget that thing ...
2 wks wages, for mici & feroza,, i do pay tax & ins., can do without.. cheaper options,,like,,say,,,deli..
You forgot coffee machine .... basterd!
For a fleeting moment I had high hopes in peltiers. stacked several dozen together only to find at the end of the day a gallon of cool water and an energy bill to be embarrassed of. I had discovered these compact compressors and bought a lesser known brand of ice chest with it built in to take out. I had yet to do so by now as in initial testing, it could get sodas cold enough to the point they explode, I've enjoyed taking it on every trip since then. Mine didnt come with the ease of slotting batteries into, but after testing it to use 50 and 30 watts in normal and eco respectively, figured I could use any lithium battery or even a small solar panel.
you should put it on youtube, i think anyone who watches this channel would watch stuff like that.
I once spent a whole year working with a manufacturing engineer to make a Peltier-heated device to affix thermal glued components to circuit boards. Almost a total fail, as the time spent per unit application was *far* too slow for a production line. We gave up on that concept and went with good ol' resistive heaters.
The liquid refrigerant boils in the evaporator cooling the compartment, and condenses in the condenser turning back to a liquid cooling off by those fans. The refrigerant liquid goes form liquid to gas when it passes through the capillary tube and that bullet shaped copper cylinder is a filter drier filled with silica beads.
Well... The further battery symbol is for the further battery. If everyone would put that much logic into their devices, you would not have questioned it...
I wonder: Does it happen to charge the batterias if and when connected to AC ? That would be lovely, right ? Like a fridge with automatic redundant power supply for the intermittent supply areas.
No, sadly it doesn't charge batteries. That would be brilliant.
@@arduinoversusevil2025 - Soooo, take the charge controller from a crapped out Makita and fit it.....
Yeah. Not like you can void the warranty any further.
Do it, uncle B.
@@The_Hairy_Farmer fix it until it's broken!
@@toolthoughts Anything and everything is a smoker if you use it wrong enough.
Battery packs do not need location indicators, the top battery indicator indicates the battery furthest away from the screen and the lower battery indicator indicates the battery closest to the screen. Love your videos!!
There is a USB port too. To charge your phone.
The power side has room for extra batteries .
Yeah, thought that was pretty obvious but apparently not since he went for the exact opposite.
Glad someone said it
@@justme002 😂 it's a comment trap? Like he was bating everyone too leave replies... .... Or...
@@EssenceRare That sneaky Canadian!
17:31 - I actually thought it was quite obvious that the rear battery was the top indicator and the front battery was the bottom indicator...
Good job sir,, being an HVAC refrigeration guy that was a really good explanation of the refrigeration cycle..
That would keep my wrenches nice and warm out in the bush this winter !!! Everyone should have a heated tool box in Canada right !!
Technical details: Peltier modules are a bunch of diodes places between two plates. They work in both directions.... you can push electricity through them to have a heat flow (or produce cooling, your choice).... you can run them the other way and if you create a heat flow then it will generate electricity for you. A Peltier module is a machine, whereas the Seabeek effect is just a physics principal, not a thing you can use. This last point I am fuzzy on so google if you care, but Seebeck effect may not be related to a Peltier module and instead be related to a thermocouple. Thermocouples are neat in their own way but different from Peltier modules because Thermocouples have no diodes, they are literally just two different metals mashed together, and they create a tiny electrical signal related to their temperature that you measure with a meter.
Nope, Peltiers are a whole bunch of thermocouples between 2 plates. You can reverse the voltage on a peltier element and the hot and cold side will swap. If it where diodes instead of thermocouples reversing the voltage would lead to nothing, you know the thing that defines a diode.
You can make peltier elements with N P junctions, but the ones on the usual online scumbacks use the thermocouple version.
Good explanation on the refrigeration cycle. Also no receiver tank on that unit, large copper section in front of compressor is a filter drier and coming off of the bottom of that is a capillary tube that meters the refrigerant to the evaporator very small inside diameter, no expansion valve. Overall impressive unit.
I've found that on all of these portable fridges that the indicated/setting temperature is the surface temperature of the walls (since the fridge area is completely sealed off), not the actual temperature of the food contained therein. I usually set mine to 26* (moon-lander's units) if I want 32-33* beer.
updoot for "moon-lander's units"
That's confusing, moon landers used metric.
But I'd be desperate if I was going to drink a beer that's 33 degrees C. That's the only way I can tell.
@@Patrick-857 it’s a play on:
“There’s only 2 types of countries on this planet: those who use metric units, and those who landed on the moon”
if you need quick cooling you need better conduction. If you put a little bit of water in the bottom it helps lots about 3 or 4 cm. Just don't freeze it. And watertight containers. But most cans are
Those moon lander units worked really well on the Mars rover...
Would love to see the insides of the Makita Microwave oven - wondering if it uses a magnetron or solid-state source.
do you have an opinion on the whole AvE got the Peltier v Seebeck effect the wrong way around? You have weight in the community - care to weigh in?
Mike, me too. I've searched high and low, and despite what it seems like hundreds of Makita microwave reviews, literally nobody opened it up. Shame.
Best episode in a while. The ones where the products aren’t junk are as demoralizing
Glad to have another Boltr, and gladder still to have another lesson in mechanical contrivances. Much love from Texas buddy
"A fat lady in pink lululemons" Can not unsee.
I actually really like the style of this design. I've been thinking about making a wooden icebox but with thermoelectric modules to be a slight refrigerator and not needing as much ice.
Hot damn, it actually has vapor compression in it!! I didn't see that coming!
Did ya know they made a cooler box for your lunch that snaps together with your rolling tool storage cart? GENIUS.
Also! The refrigerants these days are built to be different in one key way: It doesn't explode. Propane and such were originally used for those fancy victorian refrigerators, but the kitchen staff often complained about the cook dying when he lit the stove.
That’s not strictly true. Original refrigerants were explosive in the ‘30’s. Then they were tired of explosions, so moved to HFC’s which turned out to be not highly toxic or flamable, but God-awful for the environment ( 1 molecule of R-22 can destroy 100,000 molecules of Ozone and can stay in the atmosphere for decades) then more recently developed refrigerants have gone back to butylethylene and propane, which are explosive but thanks to modern safety standards and higher quality of materials are much less likely to leak, so on balance are much safer.
True, though we are using R600A (isobutane) in a ton of modern chest freezers and small fridges. My understanding is there is a limit in number of oz of the stuff allowed, so it's only used for smaller things... but that's why you can buy like 3 7-cuft small chest freezers for the price of a single >7 cu ft one which does *not* use the cheap R600a.
Thank you for this detailed teardown. This fella used to go for $1000+ a few years ago but I've seen around the $500 level latly now that the 50L model is out. That one cane use XGT and LXT batteries and has a little basket on top to have a fridge/freezer setup. For what the Yetis and Orcas cost I like the idea of the 20L model since the 50L is more than a grand for now.
For all the years I've been watching your videos they are just as great as the first weird encounter in this vast interwebs I had with one of your old but goodie vids lol keep it up man, and salutations from a boiling Texas 🤙
Looks like works gonna have to wait a few more minutes, priorities...
As a commercial hvac tech I found your explanation of the refrigeration cycle pretty damn close to how it works
Also, reason for why you can’t run it upside down is because the oil in that compressor needs to stay in the compressor for lubrication of all the moving parts
My dad used to have an old Toyota Minivan like the old box/cab over looking ones. That van had a big center console between the front seats that had a box similar to this, it held food and drinks and had the option to keep them either hot or cold. It was an awesome thing to have in Arizona, especially as a traveling salesman.
Nope, peltier is correct for electricity to heat tranfer. Seeback is heat transfer to electricity.
That's what I thought, so I looked it up, and guess what - we were right!
to keep the coffee warm you made in the Makita coffee maker. now all they need is the sandwich maker heated press with interchangeable waffle plates. they do that and I might consider changing over from Milwaukee.
First thing i noticed was those hinges.
Even from down here in US via screen pixies, i thought they looked nice.
As you dug in, looked to be a pretty good rig.
funny, isn't it? Manufacturers usually go to great lengths to hide actual fasteners and fittings like that. When they leave them exposed we go "ooh! quality!" - Or is that just the enginerds?
I did a project with peltier modules in college. How I understood it was between two ceramic plates are a grid of wires where two different metals are welded to each other and evenly dispersed across the the plates in the same orientation. As electricity flows through them electricity excites the welds in the same fashion that a cylinder of air being compressed heats up and when electricity flows the opposite direction it’s as if the cylinder of air is having its volume expanded. They are very fascinating to hold while energized. The more effectively you cool the hot side the colder the other side becomes in vice Versa however their energy effectiveness is nothing compared to an hvac/ refrigerator unit. For small projects they work fine but fine temper control is difficult which is why they are not used to cool components on computers.
Damn it's been awhile. We had to put our oldest dog, Okland, down today. This AVE video gave me and my tear ducts the break we needed. Salute brother.
The answer to the number of beers that can be drank in a afternoon is all of them…
Absolutely! Unlike the highlander, at the end of the afternoon there can be only none!
seeing this guy stumble through the explanation of refrigeration is a very new and entertaining exxperience for this channel. 10/10. give us more.
They had me the moment you popped the box and I saw the metal hinges. 🤤
I had a college style micro fridge/freezer in an 18 wheeler. I was surprised that it only drew about 75w while running, according to the DC/ac converter display. If only kobalt offered a cooler like this I would be all in. 😬🤣.
Any manufacturer: You have a warranty
AvE: absofukinlutley not!
manufacturer: HAS warrenty
AVE: NOT any more you don't
I have one of these under my desk as a bar fridge. Hasn't missed a beat in over a year. It's done 3 road trips and I couldn't be happier.
Nice to see its got a proper Refrigeration setup with a compressor and it's very quiet
Funny thing about 1234yf. It's "mildly flammable"
We were running an a/c test in the wind tunnel at work and blew a line. It's as mildly flammable as propane let me tell ya
Brown Alert?
Honestly at that point you might as well just use propane. At least then it's cheap!
Got a buddy that's running his rv fridge on woodgas, comparable to propane
Propane r290 works great..
So they've deleted the whole reason to not use propane.
I know guys that were using propane for R12 systems, and it is a highly effective refrigerant. More effective than R12 😂
Not an expert, but read something on the recent history of car refrigerants. IIRC R-12 was something like 500x as bad for the ozone as CO2, so 134a at 50x came through.Then R1234yf at only several times as bad as CO2 came about. Now, R700 is the modern flavor of choice for refrigeratant, while only equal to CO2 at damaging the ozone it functions at much higher pressures. This requires higher quality components, and is currently much more expensive when comparing the refrigerants. The article mentioned it is already in some European models. The powers that be (depending on the local) have not outlawed the production of 134a so our non late model vehicles will have plenty of supply for the future. One issue people talk about is modern refrigerants are flammable unlike the classic R12/134a hence the warning sticker on this Makita cooler/heater.
R12 got the axe because it depleted the Ozone (also has a GWP of 2400 but they didn't care about it then). Then they went after R-134a because it has a Global Warming Potential of 1300. 1234-YF has a GWP of only 4 even though when they passed all the laws to force cars over to it, it magically had a GWP of less than 1. The new stuff they're testing in Europe is R744 which is CO2 based so its GWP is 1. It's all a game.
Well, until they stop with propane there will always be a way to charge your AC if you're not worried about the whole flammability thing
@@TacticalBaconPatches Dodge switched to 1234 around 2014 and Volvo a brand known for being "eco responsible" still USES R134A in there NEW cars
Last 2 minutes absolutely hammered.
Happy to see a BOLTR today - spending my Friday night having a brew listening to my favorite RUclipsr. He lives really close to my mom's house actually - small world.
High pressure gas is condensed into liquid then the liquid is sprayed through an orifice evaporating the liquid into superceded gas. The gas obsorbs the heat and returns the super heated gas back to the compressor. Then the cycle repeats removing heat in the cooler area and transferring it to the high pressure gas side via the compressor into the condenser coil. The fan blowing across the condenser coil removes the heat from the super heated gas turning it into a subcooled liquid.
I love a Dicken's Cider! Don't forget to try a Dicken's Cider can!
New level of that joke achieved! Much appreciated 👍👍😂
Thanks for the reminder. I needed some new stickers.
Marlboro Cigs offered a similar Coleman- made unit to all those whom had saved up a right lungs-worth of their cancer coupins in the late 90's. My foreman, often found standing on the loading dock with a smoke in one hand and patch on his neck, was easily able to acquire one. Promptly sold it to me for 50 bucks when his bookie's gorilla came 'round for his Vig . (the man had too many bad habits at once). The cooler signaled coolness more than it actually was capable of but, in the Syracuse winter, the heating function DID keep ones beer from freezing... Peltier / plug in 12v.
Taking mini fridge to the next level! Damn that things awesome and built like a tank.
40V model is better. Can use 18 and 40V batteries and 40V has way bigger batteries.
If only there was a cooler like this one in 'Wallet-on-fire' Red (Milwaukee) instead of the 'Theft-deterrent' Teal.
@@mazman117 IMHO this is my biggest issue is to buy this then I need to outfit new batteries and chargers as my "fuel" does NOT fit its "tank" )-:
Hook to your bumper, with those bearings the thing should be rated at 80kmh
I love how you unbox like a boss! Makes me smile.
I 2nd that!
Your reviews are the best mate! Always bringing a smile to my face thanks!!
I get genuinely excited to watch a BOLTR or town pump project, the coolest shit on the internet shows up here. And this cool shit cools shit!
14 hours ago this comment was added on a video that has only be out for 33 minuets. you truly are magic!!!
More town pumping!!!
@@zeitgeist909I just like pitching in to the beer fund
I'm amazed how this cooler costs 400€ online but the compressor online is 600€
your car cost 5k,,it takes 30 mins to build, spares will cost you 80k, to build it..
Volume.
I have been waiting for you to get your hands on this since it released in Japan
"I bought it with the money I saved". I'm 'aving that one.
This is probably a swing compressor. They have very few moving parts and are extremely reliable. Very popular in the off road and overland crowd.
I recently brought a 12v fridge/freezer made by a company called brass monkey. Its pretty heavy on power consumption but keeps things frozen and cold when the power goes out at least. That thing looks pretty decent and the battery arrangement seems pretty simple.
I have the 15L version and it lasts 12-24 hours on the 15.6Ah interal battery, and charges while I drive.
I have same brand here, but the 25L version. zero complaints at all. Lives in the car on a second battery (deep cycle), will go for 2-3 days on 75Ah before low voltage protection kicks in. 2nd battery charges via alternator when cars running.
@@dragpixyeah I have 15L Mobicool one and that also seems to be on similar level on power. I would not run Peltier-box in a car overnight on road trips, but with compressor cooler just no issues. Basically drops the voltage of 70Ah battery for 0.1-0.2V overnight so no worries for starting the next day. It runs few minutes about once in an hour or twice if you open it.
That 1234yf is much more expensive too. They are making it cost prohibitive to just top off and move on. $30 freedom bucks for 8oz
Made my day getting to see a proper bronze bush. Thanks for the vijyo
Propane actually works better than any of the fluorocarbons. Companies just don't use it in Murica cause it's highly flammable. Very common in Europe and elsewhere. Also known as R290.
Ammonia was used as refrigerant too. Even Swiss Family Robinson did it. 😏
Hydrocarbon based refrigerant is starting to be used more in the US now. I think there's a certain volume limit that can be used for indoor residential. My new fridge uses R600a I think it was, it's a butane based refrigerant.
To think after all these years and you still find new ways to confuse the auto focus.
10:50 - New T-Shirt ideas "I survived the Mayan Apocalypse" "I survived the hole in the Ozone Layer" 🤣
I have an Alpicool branded car fridge with similar innards though it does not have battery holders, only runs on external 12 volts. A really skookum choocher, very efficient (unlike the Peltier coolers) and can even go down to -20 degreer Celcius. I use it in my car and at the cabin where there's no mains power, just solar panel and batteries. I put my stuff in the cooler at home, plug it in the cigarette lighter in the car when driving to the cabin and then just take it out of the car and plug it into the solar batteries.
It's an actual refrigerator? Now all you need is the Makita microwave.
Ok now I'm freaking myself out because I swear he already made a video about one of those ....nope, I'm just losing my mind lol 😆
They banned the refrigerants that are most active in catalyzing the breakdown of the ozone layer and the hole (in the southern hemisphere) closed back up. Skin cancer rates in australia have plateaued or slightly fallen as a result. It's not an example of the models being flawed, it's an example of government activity interrupting a trend. Same with acid rain in the US North East/part of Canada where most Canadians live.
Yeah. I can understand the skepticism around the massive complexity of climate models, and the quality of data fed into them. But acid rain and ozone depletion were pretty low dimensional problems with well understood causes. Nothing to be skeptical about. And barely any modelling needed.
yeah exactly. saying you survived the whole in the ozone while completely ignoring the active work that went into fixing it is just ignorant, not surprised though.
You'd exspect a steep decline being that today the amount of time people spend outside has fallen alot and the chemicals we put on our bodies and clothing supposedly moved away from most of the real nasty cancer causing stuff.. so I wouldn't contribute that to the ozone layer being restored
@@jim4556 Skin cancer can take years to spread. It's more common in the elderly and CFCs were banned in the 90's. So today's 65 year olds spent their teens, 20's. and early 30's getting blasted with extra UV and just because that damage has declined that doesn't mean the bill isn't coming due.
@@ProtosR B.. bbb... but we can measure the Ozone concentration directly. And we understand the relationship between Ozone and UV clearly, and we understand the relationship between UV and skin damage well. Can you prove beyond a shadow of a doubt that it lowered the skin cancer rate? Of course not. But you can't prove the sun will come up tomorrow either.
You're explanation of the refrigerant cycle is pretty good. I would say that, the gas needs to get hot first through compression, be physically cooled in the condenser, and as it travels into the evaporator, the diameter of the pipes increased, allowing the gas to expand, the pressure to drop, and now it's ready to absorb energy, or cool.
It's also a good example as to why single-tube "rolling air-conditioners" are much less efficient than dual-tube ones.
Your description of the refrigeration cycle is hilarious and somewhat right. 😂😂
Damn it. Now I need one. Yet another danger of the Makita battery family. 😂
Always great content and just another reason why I buy Makita tools, have yet to be let down.
The ones that aren't made in Japan and don't have a very expensive price are mediocre quality
@@MF175mp Try looking up who makes the compressor in this fine quality Japanese product( Wanbao by Wancool)
Every fabrication company I've worked with or for uses mikita. Those grinders have seen a lot of shitty situations.
@@jeremyt7722 I have used Bosch, Makita, Milwaukee and at least the DDF484 drill from Makita is very underwhelming. They have issues with electronics and they marketed the "metal case of the gearbox" to be durable but the gears inside were plastic and stripped completely. Meanwhile Bosch had plastic in the outside case that never broke anyway but the gears inside were metal and they Didn't break either....
I would like to see a BOLTR on a modern hobby grade radio control car. I am neck deep in that hobby, and I'm blown away by how these things are built now.
I love the idea of TEC or peltier units...(used them lots) it's just they are so darned inefficient for cooling... so I like to see real hvac units miniaturized for mobile use 😁
I would want it to use the compressor for heating in order to extend the run time 3 to 5 times VS resistive heating.
So is resistive faster but compression more efficient? What's the trade-off?
@@WeighedWilson trade off would be size, weight, complexity and expense and that a compressor won't be able to go much above 60 / 70c.
Already have the size, complexity, expense and weight covered as it is needed for cooling other than one extra expansion valve IIRC.
Adding a separate resistive heater and control circuitry in this case may even be more expensive.
@@inh415 I'm asking if compression is more efficient. And I'm also asking if resistive is faster.
I was looking for this comment. You already have a heating unit built into the cooler, just add one valve and it heats up! (Technology Connections YT Creator taught me that😂)
@@inh415not just that, but you don't need this to be hot enough to cook food, that's what the 18V microwave, coffee pot, and kettle are for. This just needs to get hot enough to hold food at temperature above the danger zone for bacterial growth.
That's so ... Cool
I have a backpack that's a little cooler.
It was so good he refused to tear it apart any further. I think you have my attention with this item o.0
I concur, sir! It's about time somebody helped out the outdoor, onsite kinda folks!
Would love to see a teardown of the Makita microwave too!
If he found the money to buy it... He will sure make it
For Part 2, it'd be interesting to know how well two Deep Cycles in parallel (or even just one), can run it from the cig adapter... ALSO, might need to check the manual, but perhaps it's meant to do the heavy lifting while plugged in, and then the batteries are for more for station keeping duty?
And does this _also_ double as a battery *charger* for the Makita packs? (when the adapter is connected)
The ozone layer issue was solved, by doing away with r12. The chemistry is easy to follow, i encourage you to read up on it. It's very real, and if you are serious in your doubt, you can experiment with it on your own.
They limit beer storage size to keep a good man honest😂
We cant be sure if the gas will kill Ozone, but we do know with a doubts shadow that it will cause California in the state of Cancer. 😂
Its 57.2° F
Every time I fly down there for a conference all I can do is shake my head. They even have those flippin signs in the elevators. The elevators! Crazy haha
These proper refrigerators have been available for going on 30 years. My uncle used to drive truck in EU, he had one of these with a proper fridge compressor. The issue was the price was over a grand at that time which makes it 2.5k now. So due to time and tech improvement as well as manufacturing improvements. You can get these for 500 and under now. Crazy when you think about it.
work on "semi" trucks in Canada and they all have compressor fridges in them
it said on the label it contained refrigerant, it wouldn't have that if it was an electric chiller.
You may have survived the hole in the ozone layer, but in this country we have burn times measured in single digit minutes in summer, and one of the worst skin cancer rates in the world. So I'm pretty happy with efforts to avoid making it worse.
That thing is incredible. Id never have expected an actual refridgeration unit in it
Note the box says 18 volt, not 40 volt.
It uses 2 batteries but only drains one at a time so you have time to swap one out to charge.
You never need more then 2 batteries, get the 5 or 6 amp batteries though if you want them to last the work day. Run at 5⁰c for best longevity. 0⁰c cranks it up a bit faster.
...I have a Koolatron (maybe 12-15yrs. old now) thermoelectric cooler in my work van. It isn't as speedy as I imagine this thing is, but she will bring room temperature drinks nice and cool (one aspect the the thermoelectric coolers that isn't as nice as a refrig type, is that they operate on an ambient differential...so the warmer outside the cooler, the less it cools inside the cooler).
...now on the heating side (just revers the polarity) and it gets quite hot inside...I've warmed up (by lunch time) some lasagna the other day in it. I also like the ease of repair to the thermoelectric coolers though, also operate in about any angle you like which is perfect for portable use...unlike the 110v types that have PSU's and other electronics...they simply run 12vdc into a fan, and some electrical overload protection and then right to the 'chip'...not a circuit to be found (at least in mine anyway). The old girl spun a bearing in the fan, and I accidentally cracked the ceramics in the chip putting it back together...but both items came to about $40CAD and about an hour to swap the busted bits out...which effectively makes it a brand new cooler as those are the only working parts of them.
...I would be interested to see how this handles field work with that compressor and all, to me a weakness on this would be that circuit board (as well as the overall cost of the thing, as my Koolatron was about a hundred and a half back in the day and has cost me $40 since)...I really like the battery operation as I don't have that on mine.......yet lol...
...it's a pretty cool and well built bit of kit, but due to it's 'need to be fairly stable' nature of the pump...It may be best left in the truck.
.......................however, it does lend to draggin' your beers all around the house and yard with you...always a cold beer within reach!
The mini saw the best opener ever miss that thing