How to make Ebike charger - DIY
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- Опубликовано: 13 сен 2024
- Hi Guys! Here is video how to make Awesome powerful Ebike charger up to 83V!
Simple design for popular and cheap Boost up voltage converter capable of taking up till 40A input power. Combine with 3 fans push-pull system runs very cool and stable even at 40A input. Paired with 12V 40A 550W computer power supply you can get 6/7 Amps on 60V or more. Paired with 24V 42A power supply you can get very powerful 12-14A ebike charger. Set up your Voltage input-output, Amps and monitor temperature directly on the coil. For lacking of time there is no screws holes in 3D printed parts you have to drill it yourself) but I will add them later as well.
Thingiverse link:
www.thingiverse...
''Update! Here is Version 2 '' www.thingivers...
Necessary parts:
Voltage converter : goo.gl/ZKJNEs
Standoff Hexagonal Spacer is included with booster.
Optional parts:
Watt meter - goo.gl/hrurxQ
3D printer fan - goo.gl/4U3bXQ
DC fan control -- tinyurl.com/mb...
Connectors -- goo.gl/hs8TF5
Temp meter -- tinyurl.com/l5...
Volt meter -- tinyurl.com/lu...
14AWG Gauge Silicone Wire -- tinyurl.com/ke...
XLR Female 3-Pin connector --- tinyurl.com/mk...
E3D V6 Hotend upgrade goo.gl/xbjjL5
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/ nexitech
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Thank you so much for your support.
Best Regards
Nexi
Hi Guys! Here is Version 2! Much better, more powerful and easier DIY E-bike charger then this one from the video! Here is the link: www.thingiverse.com/thing:2969696
Can this one be turned down enough to work with a 13S battery pack?
I just used the same module to build a charger for my 13S pack but It gets a bit warm if I go over 3A. I'm powering it with an old dell 12V 18A power brick. If I used a higher voltage supply would it run cooler?
This is the best video! The most significant! Listen man, I wish God bless you and your family. Thank God that people are as good as you
For higher output, would it be better wire 4 ps's in series, providing 48v to the boost converter, or parallel, to provide higher amperage at 12v to the converter?
Those power step up boards should have a 12 volt outlet for thermofan. I have 3 of them and they all do.
why you haven't solidly include this xt60 to the box?
Great video! Thanks for posting. Does this work like a regular li-ion charger? Does the amperage drop as the voltage goes up? Would you need to constantly monitor so the batteries do not get overcharged? I'm building a 36 volt battery pack. What BMS would you recommend?
Thank You
would like to know aswell
Me too...
HI Mike! Thanks for commenting. Yes it's work like regular charger. Battery pulls amperage to level with the Voltage and when is reaching to desire voltage than starts to drop amperage to battery needs. For example your 32V lithium battery is 42V full charged. If you set charger to 42V then charger will charge to 42V and when reach 42V it will start to drop Amperage and if you wait long enough Amperage will be 0. No need to monitor nothing. You can set up 41V just to save cells cycle life and you can live it ''on charge'' how much you want and it will never pass 41V. For BMS please look my video about 18650 resistance its very important to understand that BMS will NOT save your cells for overcharging if some of cells go out from balance. Check my video about Lithium Battery testers its very handy to monitor your cells when driving or charging(It has Over voltage alarm to save your cells from overcharging. Best regards
ruclips.net/video/1lJSJWCFQl0/видео.html
ruclips.net/video/VTMQ0Eg8Xhc/видео.html
Only think I see as different from a dedicated li-po charger is the end of charge. Aka stopping charging completely when the battery is full, but you can just stop it manually.
Mike Ferrari boost converter can be set to any voltage and stop when it reaches set voltage. This converter is a constant current and amps can be set to what you like. They work well
You should try ans make a UPS / Power supply backup for 3D printers in case of power outages or serge's.
Thank you for an excellent video, now getting the parts together to make one.
You are the best,i go to build one for my 72v 30 amp battery psck
Thank you! Also, check the Version 2 in video description maybe is easier for your application.
Cool video, thanks for explaining, just wondering though, how do you tell when the battery is fully charged? also, if you plugged in overnight, would it just trickle charge or jump to 6amp?
Glad you like it. You know when battery is charged when Voltages raise to the set point and amps drop. If you plug your empty battery over night it will charge it to the Voltage set point and amps will eventually drop almost to zero. At that point charger will just keep battery in full state until you disconnect it.
P.S. Check the version 2 in video description.
Nice build!
On a scope, I’d like to see the output the the real Charger then do the same for this home made Charger.
I’m curious about ripple and harmonics.
DC/DC для сонячних систем як контролер заряду а також для заряду акумуляторів LiFePo4 збірка 24-84 вольт та Li-Ion працює чудово!
I see a sign of ultimate box maker))) going
:)
at the end of charging the current goes down normally on my cheap charger...
is it healthy if your charger pumps 6A all the time in the battery?
Yes it does. This is old version. Right now I use 10A power supply charger. Check the pin comment or video descritpion. I have build two 10A chargers and I use them in parallel for 20A charging as my E-bike battery that i build is huge!
Very Good! Thankyou.
So if someone was to break open the charger they got with their shark or triangle pack ebike battery. Then the internals would look something similar to yours or would it be a different type of technology? Because a lot of ebike chargers I've seen are less advanced than yours and just have an LED to show that it's charging and another to say the battery is fully charged.
Great idea and video, thanks!
Great idea, and beautifully made video. Thanks for sharing this.
Thank you! Make sure that you check version 2 in video description.
nice one ,i have all the ingrediënts 12 volt i use it for hydrogen gas install
This is really cool. I am thinking of building a charger to charge my ebike from solar energy which would be stored in 12v leisure batteries. What I don't understand is how to avoid overcharging, commercial chargers presumably cut out when the battery is fully charged but your design does not do this? am I misunderstanding?
Thanks! Please check the version 2 in video description. Much more easier to make, cheaper and more powerful.
When you set the desire voltage and battery reaches it, Amp flow will drop to 0 and it can stay like that basically forever. You can't over charge Lithium battery if you set charge voltage output to the safe level.
Great video have ordered all the parts to build a more powerful charger. Was really surprised at the cost of getting the case 3d printed was double the cost of all the other parts so will make it out of something else.
Stephen Galvin I made mine out of 6mm ply and a few screws in my come in handy box. Cost me nothing.
Thank you. I just looked at store bought 48V chgr for lead acid but wtf ? only 2.5 -3A?! , yet go to 20 A and you are talking $185 plus big shpg $ This is just perfect, I love the DC Booster. Been using other smaller 150W and they are near bullet proof ,....you get a decent weekend project including the 3D prints. Fantastic project and $ saving as well. Got four new Deep Cycle 20Ah and will prob err on the side of caution as far as increasing potential chg cycles. Needless to say I just debugged my first 3D P as well :-)
Chris Leech This really isn't a suitable charger for lead acid batteries.
Dont charge your batterys with 20a!! They wil catch on fire.
Most li ion packs have a 1c or 1 times it's own capacity charge rate so 20ah charge for a 20ah battery is okay but lead acids or pb are no where near that high and can only be charged at a fraction of there own capacity usually even for 20ah lead acids its like 3.7 amp charge max but at least it won't blow up it will just balloon and smell like shit from the burnt sulphuric acid after it boils off
Nice Job! I am wondering, if you wanted to custom make an e-charger like this for say... RAD bike 48V @ 14Ah. Charger from rad is like 52 Volts @ 2Ah. But the real interesting part would be, would be to charge this up so a DC-DC converter from a 200Ah, battleborn battery at 12 Volts. Can you buy a board like this and custom make one? to do that instead of 120V. Thanks for your video! again, great work.
how dose your version 2 safely charge lithium packs. I wouldnt think a simple dc powersupply could charge one correctly
TL:DR charging lithium isnt hard. You pretty much cant go wrong along as you don't overvolt or use too much amperage, most batteries have a spec sheet that specifies their charging parameters for a single lithium cell it will always be charged to 4.20 volts and usually around 1 amp you can go lower or high but it might get hot with too many amps then you can simply multiply these values by your battery pack. if you have a battery pack with 10 cells in parallel and 13 in series then 4.2*13=your voltage 10*(whatever their rated amperage is)=your amperage.
Sir how long do i have to charge my battery,,i have an ebike reted at 48 volts,what charger voltages shoud i use and what's voltage settings i have to put on my battery
hey, great video! What wires did you use, coming from the power supply?
Nice vidro bud just susgribed to youre chanel love to get my hands on one of this babes for reviue keep up the good wark.
Excellent video, thank you, but so many wires coming from the PC power supply, are these all the 12volt wires wired together?
Typically the yellow wires on PC PS are 12 volts. You can connect them all together to act as one big wire. This helps when more current is passing through.
Great job man.
wiznat10 Thanks :)
How do I get the video description? Thx
I have a question please. If I have a battery, 12 v16A Lithium. Three cells. At what voltage should the charger cut the current? 12.6? or more? Thank you
Hi i had a server psu 12v 100A how to make a charger for 42v 4A ? Like this old build ?
Great work wish u more success how long did it last for u
Thank you! Mine still works! Also check version 2 in video description.
when you mentioned amps output you spoke of your battery and 60 amps. what is 60? and what is the relationship between whatever 60 is and the amount of current (amps) which the battery can absorb during charging?
Jay Tom Heldman My Ebike Battery that I make is 14S 224pcs 18650cells, capacity is 37Ah and BMS is 60A. My BMS in time of making this video could handle around 20A of charging and sense my battery have 16cells in parallel in each group I could charge them even faster then 20A at 58.8V but I really don't need to go higher then 10A-20A.
P.S. I don't use this setup no more for charging my E-Bike. I brought cheap 60V 10A power supply and I lover voltage to 58.8V. I add voltage meter,XT60 connector,few heat-sinks on mosfet sides. It runs like charm and it's much easier to use it and cheaper then this method from video. Here: www.thingiverse.com/thing:2969696
I use the same idea, but the cheap volt and amp meters are rarely on the money so I only use the meters as a ruff estimate. When I set it up I use a Fluke that was recently calibrated. I want to get these meters that you can calibrate to a good multimeter and I know it would only be accurate at the power I need, but if someone knows please leave a link? For now I just remember 13.1 and 12.9 is really 12.6v, Thanks
which power supply are you using?
Check Version 2 in video description. Much better and way easier to make.
Hi Nexi love your project so clean and cool. Do u think this will work for 62.7V bat? I have a cheapy 2A which doesnt work as it should and want to make my own to have better control on the charging and pump some more Amps too. Thnx in advance, Greets from Greece
Thank you so much my friend! Please check the V2 of this charger, it's cheaper, more powerful and easier to make! www.thingiverse.com/thing:2969696
P.S. for 62.7V battery I would chose 70V power supply, I believe you can lower the voltage on potentiometer from 70v to 62.7v but please make sure to read any comments and description or contact the seller to confirm this before you make a order.
Ecellent done. Any link where such a voltage booster can be find? Thanks
Szentmihalyi Autodiagnosztika Thanks,for links please check video description. Cheers!
Hi nice work 👌 , does it cut off when the battery is full charged
Thanks! It drops amperage to zero (0) when it reaches set charging voltage so you can leave it on charger overnight without a problem as long you set correct battery voltage.
P.S. check version 2 in video description. Easier to make and it can be more powerful.
DEAR Friend,
if i wants to use this converter as regulated power supply as describe in the module listing
like 12V-90 V /1500W. and insted of SMPS i wants to use Transformer power supply then please suggest me the transformer output reatings.
waiting for reply
santosh
Great video Nexi! Very nice build. Does it matter what gets connected first? For example, should everything be powered up first before plugging in the battery?
Thank you! Yes that's correct. Power it up first and then connect the battery.
P.S. Check out the Version 2 in video description.
@@NexiTech Thanks Nexi. I built this one because I had the parts. I burnt out the shunt resistor by plugging in the battery first before turning it on, oops. Added a diode to prevent this in the future. Do you know where I can get a replacement shunt? (it's the copper wire near the output terminals)
Hi i need some help
I have the same voltage booster board but when the battery voltage nears 54.6 the voltage boosters volatage goea ut to by like half a volt is this ok?
I have a little bit problem a with this settup...
When I wire correcly, was a realy big spark from last conection, I allmost s*it my self and pc power suply turned off becouse of short-curcit protection
I have a little bit fear to screw all up, becose if I short-curcit the battery.... It will not end well.
Sooo.... What should I do next?
How are you managing to connect this to the battery without getting a massive power surge from the battery and capacitors which blows the charging fuse in your battery and blows your charging port?
The BMS inside the battery should have no issues when connecting power.
Not sure about this video but I recommend XT90S connectors as they have a nice antispark feature. Looks like normal XT90 but with a green marking.
The charger cost 20 dollars only, not sure how come it cost few hundreds as you mention
This is a old video.
what is Input voltage can directly conect ac 220v 50hz
I have been thinking of this. I want to charge my 48 V ebike battery from my 12 V system in my van. Is it important what is connected before the BMS? Can I just as well use my boost converter as getting a converter made for ebikes going from 12 V DC -> 230 V AC -> 48 V DC?
Torgny Nordén Yes you can but your inverter should be "pure sine wave". You may blow your 230vac charger if you have a cheaper "modified sine wave" inverter. But I thought the point of this is that we can! This charger will also blow the fuse in your lighter socket if you push the output much more than 2 amps in which case you may like to consider the smaller version: www.ebay.co.uk/itm/152355318529.
Hey nexi, im running the same setup with you and i believe im having retraction issues on my V6. Anyway you could share your retraction settings? Thanks in advance.
Hi man! Let see, what temps you are using? Is nozzle/hot-block nice and snug? No leaking? My retraction speed is 25-35mm/s on my V6
Where can I buy this for my 48v 20ah-23ah lithium ion battery ? It looks very lightweight.
Check the Version 2 in the video description. It's much more powerful and easier to make.
Hey, nice Video! But you dont have fear that the box can lift up becaus of the many fans? :-D
A question, the computer power supply is only rated for 520watts, that would limit the charger you make to that right?
PC power supply with 520W have usually around 35-38A on 12V. Efter step up voltage using this device you can get around 5.5A-6A on 60V. That's still more powerful then 90% of stock ebike chargers. Plus you can adjust any voltagw from 12V to 86V on some units even 90V.
Great project. Can you tell me is the fan port on the board temperature controlled or just 12v the whole time?
Its 12V all the time that's why I add buck converter for fans to get better fan speed control.
Nexi Tech Thank you. I've ordered the parts to make your charger (except I don't have a 3d printer so making a fine wooden box!) I was looking for a temperature controlled buck converter of similar size to the one you use but can't find one. Do you know how one would convert the one you use to be temperature controlled, say replace the small potentiometer with a NTC thermister? How would that be done?
so i have a 14s24p Li ion battery with a standard 5A charger and if my BMS supports for example 30A Chargepower i can use a charger with 30A safely at home?
samsung 25R cell btw
Samsung 25R cells are 20A cell(each) and they can take around 4A rapid charging rate(each) and nominal charge rate is 1.25A according to data sheet. You wrote that you have 14s24p battery? That's 24 batteries in parallel configuration. What a monster! Your battery could in theory take up to 96A of rapid charging rate and 30A standard charging rate. Heck, even 50A charging rate should be no problem for your type of cells.
Now Discharging rate. 20(A)x24(cells)=480A
So, your battery could withstand of discharging rate of 480Amps, 52Vx480A=24,960W. Insane! Now that depent of how well your battery is built and how well cells are connected to each other.
@@NexiTech
Thx for all the infos
Your intro looks like Ubisoft intro xPPPP
I don't know where booster link is. Can you post it here? My CPU is 620 Watt. Need charge 36VDC battery pack with 42vdc. 620/42×80% = 12 amp
Does your power source output 12v or is it outputting a higher voltage to get that high an amp charge?
Stephen Galvin He's using the 12 supply from the PC psu. I'd be interested to know what the current draw is with 56v out at 6 amps. Probably about 30 amps? Any chance of measuring that?
Is total cost cheaper than power supply on Ebay?
Check the Version 2 in video description.
What one would i use to make one for a 72v (84 v full charge) ebike.
Link to buy pcb
Nowdays is much easier to just get adjustable power supply. You can get from 0-90V Here is example. www.thingiverse.com/thing:2969696
Can you use this to bulk charge? Does the amperage lower itself as the voltage of the battery rises to the set voltage? Or do you need a BMS?
jbuccaran Yes you cam use it for bulk charge. Amperage is lower itself as battery gets full. At the end of charging proces when it reach set voltage it will drop completely.
P.S. You need BMS in anyway. This charger will not balance your cells.
Thanks for the quick answer.
excellent
So basically you took a power supply from computer, purchase Volt booster
So Volt input into the battery pack is higher then your ebike battery.
I have a 620 watt ATX 12V power supply from my computer.
What kind of booster do I need to buy for my 36VNiCd ebike battery pack?
36NiCd??? No way! I never seen NiCd battery that size! You could get version 2 of my battery charger(link in video description) and just get 40V 10A+ powersupply and adjust voltage to 36V if that is your charging voltage? Usually voltage on 40V power-supply can be adjusted from 34-42V
Pls how do I get the video description? Thx
Camera moving with your head is killing me. Fixed mount camera. Other than that; GREAT!!
Sorry this is old video, new ones are much better, but thanks :)
Hey can these be in parallel for more current?
RandomPsychic Yes they can. But I highly recommend V2 www.thingiverse.com/thing:2969696
Much easier and more powerful
Is the melted gases from Pla/Abs safe to breathe (like is it safe to put a 3d printer in a room with people in it)
Heating and printing PLA is consider safe and not toxic. ABS is recommend to print in ventilated room. Its smells unpleasant. But I recommend using ventilation or just ''opening'' window while printing. Why taking any unnecessary health risk.
Nexi Ill be using PLA thanks for the advice!
Nice. You welcome Sam. Take care
Will this charge sealed led acid batteries
Yes it will.
Nexi Tech could you just us a dc bench power supply to charge it? Like this
rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F312593441777
Would I still need the watt meter thing you where using?
Where do you bye them kits
Please check link and info in video description
Your too perfect!!
How do you adjust the current output?
There is a screw for Voltage and for current on the DC booster.
Pls how did u connect your CPU power pack
CPU power pack???
Yes
But isn’t the point to charge them slowly for better longevity?
Acrimonious Mirth Slowly? 6A changing rate for my 37Ah 14S battery is actually very slowly :D I still need 7 hours to fully charge. I never charge my battery more then 80% to save cells life. Btw this is old version of charger. I using now 10A charger. Check the link for new verison. Much better and easier to make.
www.thingiverse.com/thing:2969696
Hi was wondering if you could build me a charger at cost thanks
Ebike Solutions Check version 2 in video description.
Nexi, Hopefully give me your opinion or thoughts on this, as I am really using guess work more than maths or theory.
I am thinking of building this using a 36V 10A SMPS
I will be using it to charge a 36V 30Ah lithium ion so charging overnight maybe 40V at around 4A to 5A .
My thoughts are that rasing the input V to 36 is going to give the buck converter less work to do,, and perhaps less heat from the buck,, perhaps it will last better. Thinking that the SMPS with this demand is around 3/4 of it's theoretical max.
Am I perhaps being ambitious, expecting the china made 10A 36V smps to continuously supply this!
I prefer to over spec things but I am trying to keep cost down at present.
Thanks Ray
Reamann MacBiatiagh I have maybe easier and better solution. Insted of this charger from the video am using V2 now. Much better,simpler, more powerful and easier to make/convert.
For my 14S 37Ah pack am using 60V 10A powersupply with adjustable voltage from 52V-60V. For you there is 42V power supplies 10A-14A that you can use, they should have adjustable voltage 3%-5%+-
consider that you have big 30A battery so you could use extra power as well when you need a Quick charge. Some 42V power supplies have 14A current which is great. On 40V i guests you will have 8-10A which for your 30Ah battery is actually slowly charging :) Not sure how many parallel cells you have but on mine 52V 37Ah I have 16 cells parallel with 60A active/smart BMS. I can charge mine battery on 20A/30A current easy or even more with no heat.
P.S. I never charge my battery over 4V per cell and I never charge it over night or let fresh charged battery to stay charged for long time if I don't use my e-bike. I use active smart BMS with Bluetooth to protect and monitor charging/discharging current, voltage levels of each cells pack and temperatures on my battery and much more over smartphone App including editing parameters and behaviour of BMS.
I hope I helped :)
Cheers!
Look at the link: www.thingiverse.com/thing:2969696
Is the the power supply a converted computer ATX or a dedicated power unit please.
Doc Cox Its converted PC power supply
Thank you.
All that has been done is that he's taken the 12v feed from the PC psu (yellow wire). No need to convert anything. Have you thought about buying a cheap multimeter?
Thank you, have never seen this type of ATX before, I have plenty of multimeters thanks.
Doc Cox was meant as a comment for ofsamsonov93. Did you build one? Do you know if the fan terminal is regulated to 12v or simply taken from the input?
Something like this would be wonderful if it could serve two functions....as a laptop PSU/charger AND an ebike battery charger. My two biggest battery hogs.
Goodboy
And then you plug it in:
Da ting goes skra pa pa da pop pop popp
Except it doesn't and everything works just fine...
intra morph
Yeah but then you go insane cause of the crapy piano sound trakkk
Make 48v 40amp charger
Nowadays it's easier just use 60V Power-supply and lower the voltage down to 54.6V. I use two 20A in series. 40A Lithium charger piece of cake.
What about balancing
Gainster BMS is balancing your cells not your bulk charger.
@@NexiTech isn't charging each series part of the battery with it's own separate stage charger a better approach than having a bulk charger?
Gainster Yes it is, but finding 13S or 14S charger is not easy.
Almost nobody's is making them. People have 20S battery packs these days so bulk charger is only logical option.
P.S. This charger is old, there is V2 of this charger, check video description.
where can i buy this in Serbia?thanks
Branislav Jakovljevic Check video description you can find all parts you need to build this charger. Regards.
Hallo, just wonder where you can buy the enclosure?
Enclosure is 3D printed. Check video description.
hi
You know that power supply is set for 12v and it can be modified to whatever voltage you want...
Not to my knowledge :)
Please tell me how on earthis this practical ?
It's not for everyone :) In the time of making this video I needed the Ebike charger and one year ago 58.8V chargers was very expensive and I had few of this boosters in the workshop anyway, few old PC power supply and parts so I told myself lets make Ebike charger, it could be fun and useful as well and I can save some money. This booster is 30A rated and it comes with standard small fan. There is boosters without fan and they are 20A. With extra 2 fan in puss/pull configuration like this you can go higher than 30A without worry(and there is temperature sensor on board,. I was using this setup for charging mu bike for more then 9 months and booster is still working great. Never let me down, burn fuses or short out in all this time and I was using it every day to charge my Ebike that I ride to work and back (26Km) every day.
Two months ago I upgraded this Ebike charger(booster) and now Am using 60V 10A powersuppy(They got very cheap now and they have adjustable voltage from 50-60V) to charge my ebike and I have two of them. I run them in paralel as well when I need Fast charge of 20A on(58.8V) or 1200W of charging power. I add few heat-sink on them where the mosfets are and they are stable and cool. I send you some photos maybe it can be useful to you. Here are the photos: my.pcloud.com/publink/show?code=kZXuoR7ZUSApXHfzJSYNiz482Ww61Xgka1yX
if you had made acase for it all then yeah but i can tell you thats you are gonna break it if its separate since youll keep nocking it don aso .... have you looked into making your own circuts ? AKA KASYAN has some very good videos on this topic chek him out very simple schematic yet very powerfull
That's enough airflow to cool a nuclear power plant
Hey guys I need toske a 48 volt charger out of things on hand, computers , tv parts foe electric bike 48 pedigo volt pack
This guys sounds like Arnold Schwarzenegger 😆
HELLLLLOOOOOO!
This is a highly inefficient charger. The boost convert is less and less effective the larger the voltage difference from 12v. The charger will have less than 60% efficiency. It works though.
If you're in a motorhome less efficient than running an inverter with your mains AC charger or better? Certainly less to carry. In my tests with the baby brother of this device I found it much more efficient than 60%.
Boost converters are less efficent the greater the voltage vs voltage difference.
Cutler Cycles Have you got figures for this particular case? Your 60% implies that the psu used here must have been giving 47 amps at 12v to produce 56v at 6 amps. That's 9 amps more than it's rated at and 7 amps more than the video says. I'm getting 93% efficiency with a smaller unit that gives me 2 amps @ 42v with inputs of 12v @ 7.4 amps. These units are limited by the input current but that doesn't mean less efficient; the inductor is being run at 130kHz if memory serves me. The other question I was asking is when all you have is 12v (unless you plug in an inverter) what is the more efficient alternative? Inverter or not, that is the question?
input mains vs output to battery. if the PSU is about 80% efficient than a 520w RMS psu would consume 650watts from the mains. The conversion rate from your PSU to the battery is about 65% so total efficiency is 345watts/650watts= ~53% total system efficiency. The biggest loss is at the boost converter. If you input 48v PSU into the boost converter you can raise your efficiency to 80%+. I made this same setup a few years ago. Anyways great video and nice charger box. thumbs up.
Does version 2 work using DC?
MrBrymstond Using DC?No need. It's AC/DC power supply.
the blower fan has no place in that box, get a cheap fan from aliexpress and call it a good charger
Please don’t do this just get a charger from aliexpress they’re internally adjustable with 3 pots with aluminium cases
Check out Version 2 in video description.
the voltage controller costs 50$ ! ..this is a price of charger !! isn,t it ??
You do realise that this video is over 2 years old? Check the second verison of charger that I build using cheap Powersupply. You have link in video description and in the PIN coment.
p
lame
WORST DESIGN EVR
Thank you. Check Version 2 in video description.