Milwaukee M18 12.0Ah battery charging and analysis - Supercharger vs. Rapid Charger
HTML-код
- Опубликовано: 28 авг 2021
- In this very first video for the Battery Test Channel, we take a look at how the 12.0Ah battery performs in the Supercharger vs Rapid Charger
Excellent and informative video. Like others who have commented, I quite like a more modest charge rate when time allows. So the standard charger gets the most use with the smaller capacity batteries I tend to use. I own standard and rapid chargers. Thanks again.
Think the discrepancy with the display is because the cell balance is out. But your overall voltage is the same. Love your video thank you
Thank you! One of these days I hope to find time to make more. So many batteries, so little time. Appreciate the comment :)
Always had the understanding that slower charging will prolong the life of the battery
True, to an extent. There is such a thing as too slow! You can’t go wrong with a 1C charge for the most part. What that means is - if you have a 3000mAh battery, charge it at 3000mA, or 3A at the correct voltage.
For a Li Ion, that’s around 3.7V average, or 12W. This is why the 12W USB charger makes a lot of sense for phones.
@@BatteryTestChannel Honest question: What about phones that have batteries around 4,000-5,000mah and have 30w or even 45w fast charging. Like the new Galaxy s23 Ultra? Is that harmful to the battery at that point?
@@DarkestofTimes I don’t think they’re harmful, but they very much act like the V3 supercharger that Tesla uses. They charge at 45W for a short amount of time, and simply dive down to 25W for the rest. They’re 45W in name only in my opinion, and many of the tests prove it. Now what really scares me is the Realme phones that charge at 200W+
How the heck they do that is beyond me.
@@BatteryTestChannel lol, good to know, yeah that sounds insane.
Awesome to hear the brain storming of ideas regarding batteries and charging. Great video!
Thanks Joel! Trying to find some time to put out some more videos soon. Appreciate the idea on the other post!
Very informative test. Good job, thank you!
Thank you! Glad you found it helpful.
I’m using the standard charger on all my batteries 2.0-12.0. I can wait and they will last much longer
Nice insights! 👍
Great test
But you do a test on the supercharger versus the dual rapid M18 charger?
Maybe the batterys have different cells with slightly different discharged voltage
Monitoring the battery temps during the charging is the only thing I wished you had also done.
Maybe a round two?
I did monitor temps and did not find an appreciable difference. I even charged the batteries “naked” and did time lapse testing with IR cameras but it really wasn’t much to report on so I just skipped it. The smaller batteries do heat up a lot more and warrants a video… eventually!
so what charger is the best for battery life
Thank you. How long to charge a totally dead 12AH high output battery in the 3 cases below:
(A) with regular charger? About 3hr?
(B) with rapid charger? About 2hr?
(C) with super charger? About 1hr?
The regular charger eik take 4 long hours!! 2 hours with rapid and 1 hour with super. You got those perfectly.
It’s actually around 55 minutes with the supercharger.
The max power is very telling. ~80W, ~150W, ~335W.
I think the reason for the blinking and non blinking is due to the chip inside the battery. It knows how much power it needs to do the next job so bottom battery is saying "no I can't drill that next hole" and the top battery has been reset so it's ready to try something. EVEN though it won't go
When you measure the amp send to batteries
Super charger charges 13.5amp
Rapid charger charges at 6amp
Regular charger charges at 3amp
(A) Where do you get this info, from the paper owners Manuel or on-line manual or off a spec plate on an actual charger?
(B) Would I do better and extend the battery life to just use a regular charger??
@@stephenfiore9960 i measured them
those High Output are designed to handle those rapid and super charger
personally i stick to rapid 6Amp
cells can easily handle higher 20-30amp
but bms might not be able due to heat
you can use a fan to keep them cool
most likely damaging the charger than battery itself
@@TranTek ….Thank you for taking the time to answer
so is it better to use a faster charger for the higher output batteries? i have the rapid charger and the standard charger but my thinking was a faster charger wouldn't do the batteries very good? i just try to alternate between the 2 with all my batteries
I would not use the Supercharger with 1.5 and 2.0Ah batteries. Otherwise, you’re safe to mix and match. The larger the battery, the more impact you’ll see overall as you pointed out. So yes, use the Rapid charger for the bigger pack, since there is lower stress that way. Also, use the standard charger if you can spare the time on the small packs.
Once you know the current output each charger will have for each battery then use this formula
0.5C=preferred slow charging for power cells
1C=standard charging for power cells
2C=absolute limit for charging power cells and not all support a full 2C
Charger Output (Amps)/Battery Capacity (Amp Hours)
13.5A/12Ah= just over 1C
6A/2Ah=3C no no no no bad
I know the rapid charger can detect battery size from a BMS signal to prevent the smaller batteries from getting 13.5A but 6A is still quite a bit for medium batteries and too much for the smallest guys
Moral of story....buy extra batteries and save $200 on Super Charger for Rapid...
What kind of a gauge are you using, white. Time line 5:36
Bob
Hi Bob. I'm using generic power meter off Amazon. If you simply search for "US Power meter" on Amazon (or ebay) - they will come up. They're reasonably accurate, I tested them with a 10x clamp accessory and it was within a couple of watts.
I'm not giving you a direct link because it changes by the day - as you can tell by the two meters I have looking similar, yet being different with no label.
Hello. Please tell me is this a super charger milwaukee M12-18SC ? Can it be connected to a 220 volt network ?
I just looked. It looks like the US version is 120V only and cannot accept 220V.
It's better to slow charge your batteries, super chargering isn't good for the cells. If you want your costly battery to last longer, don't rush the charge only if you absolutely need the juice.
Agreed!
However, defining a “slow charge” depends on the physical size of the battery. If the battery chemistry is the same, a larger battery will charge at the same rate, at a higher current.
Many modern chargers put out a standard charge rate, so while a supercharger charges a 12.0Ah at a “standard charge” speed, it definitely fast-charges the smaller battery.
I hope that helps. Thank you for watching.
You missed the current, the super charger only supercharges the HO 6.0, 8.0 and 12 at 12 Amps and the rapid charges all M18 at 6 amps that’s the difference, the down of the SC is that over time it will degrade your batteries faster than the rapid, but not that much really, at 200 cycles it is expected to hold 80% of its capacity so it depends on what’s you do or what you want
Yes, you’re right that the extra power only helps the HO batteries, except it also seems to pass a ton of current to the 1.5Ah and 2.0Ah M18 batteries!
Hi,do the rapid charger charge the normal m18 and m12 battery.
Hello. Yes, the rapid charger will charge all M18 and M12 batteries, but significantly quicker. I think it’s the ideal charger from the lineup!
Voltage does NOT represent state of charge. Its honestly besides the point anyways. Apples to Apples for this test is will be very minuscule to the end result. They are both 18 volt batteries. So the apples to apples analogy doesn't even apply either. Comparing apples to oranges would be like comparing M12 and M18. But you have two M18 batteries... so two apples. I bought two M18 5.0 batteries brand new and they both came blinking red. Put both of them on a dual rapid charger. And they literally finished within 5 seconds of eachother. I did not test the voltages or anything like that. This just goes to show that blinking red IS blinking red. Yeah maybe one is measuring slightly less voltage than the other but so what. Its really not even a big enough variable to even be considered inaccurate to the test. A good multimeter (like the true RMS Fluke meter you have) is displaying an average on the screen. That voltage number is not the exact number either. Its compiling the averages.
At the very end, the voltage curve falls off a cliff and is therefore meaningless. Perhaps I shouldn’t have mentioned this blinking since - as you said - they will finish within seconds of each other. I was just curious about the blinking behavior.
While I agree that you cannot glean SoC purely from voltage, there absolutely is a correlation. It’s just a poor predictor due to a flat discharge curve. So it’s possible to get a ballpark curve. I just can’t tell you if its 40% or 60% because the curve is not linear. A rise from 3.2V to 3.7V is much less significant than 3.8V to 3.9V for example.
Dude,
You have to put a (small) load on a battery to test the voltage. The internal resistance of the meter is too high
Lithium battery charge doesn't go by voltage
You’re right. The voltage is relatively meaningless especially at the fringe. A 0.1V difference has very low impact. I’m just pointing out what I see really.
Thanks for commenting!
@@BatteryTestChannel thanks for reply something you may also wanna test is equally draining both batteries with a hobby grade charger were you can discharge a set amount of mah after both batteries are fully charged then charge can get complicated tho
@@nightmareinaction629 Good idea! I do have two M18 lights. I can measure current draw and confirm that they are equivalent and use them as a load.
I’m also into RC, and do have a SkyRC B6 i could use. I’d need to wire up a balance charge connector to the battery, which will get a little dicey…
It’d be a lot easier with an M12 battery, since it’s 3D instead of 5S.
Wrong, that is a feature unique to LiFePO4. NMC/NCA lithium ion can be reliably correlated to State of Charge with an Open Circuit Voltage after the cell has rested without a load for at least an hour.
can you turn a basic charger into a rapid charger?
Well, the internal components aren’t the same since they put out different amounts of power so I doubt it. Depends on how badly you want to make it work I guess!
background music sucks
make videos with no music that is the best route
if you want a little of music in the intro, that is fine but in the whole video, that is annoying
Thank you for the feedback!
HORRIBLE TEST, this guy is making WAY TOO many assumptions and assertions. Anyone who ACTUALLY works with electricity on any capacity (not just on paper) knows there will always be a voltage variances for LIKE ITEMS. That’s just the way it is