one more thing since the lipo balance charger is blown is the power supply blown too? this thing
You’d have to check with a multimeter to know
I got one what do i check for?
The supply should be labeled, make sure the output voltage is as-described on the label
its labeled 12v and the meter is reading about 12.1V so I guess its still good, thanks!
Ah, I see. So the plan is to have two 6S balance leads going out of the casing and charge with two 6S chargers? I guess that should work as long as you keep the amps low as @Trdolan03 has mentioned. It will take a while to charge, though. About 5 hours with 1A.
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yeah thats the plan and I will probably charge at 2 amps which is good for the batteries anyways. Thanks a lot Janpom you’ve been very helpful
Makes sense. Good luck with that. Let us know how it works out.
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looks like you got the polarity of the balance leads the wrong way around. you would have burnt out the balance resistors inside the charger and maybe a FET aswell. you have to really pay attention to make sure you have the balance leads correctly orientated to match the series wiring. I have covered this many times in the past. please look at this diagram:
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cannot agree more, use a bms
@Toohat I’m actually not sure if the two chargers idea would work. If you only charge one 6S pack at the time with a single charger that should be fine. However, if you connect two chargers without taking the whole 12S pack apart to two 6S packs, then you would effectively wire the chargers in series. They would be connected to each other at the point where the two 6S packs connect. If that’s OK is beyond my fairly limited understanding of electronics.
Can someone more experienced comment on this?
Here’s a quick picture (no balance leads to keep it simple) to illustrate what I’m talking about:
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Its okay as long as they are two independent chargers and not a single two channel charger.
If it’s a single two channel charger. It will blow up as the two channel are not meant to be placed in series ever.
If they are two separate chargers with separate ac adapters. They should be technically isolated from each other and the reference ground should not matter. But if they are not properly isolated they could trip a breaker and or blow. I haven’t had any issues with that though. I used to do that way back in the day with some other rc stuff.
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Depends how power is supplied to the chargers. If psu has dc ground connected to ac ground (which is pretty common), charger2 would be shorted on the charge leads.
Must be super careful.
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Yes. This. I do remember now that I had to modify some of my power supplies to disconnect the ac ground from dc groung.
There are also some power supplies that come without an ac ground. The ones without the third prong. These work good too.
That makes a lot of sense. An easy check should be to power up both chargers and measure voltages between the positive terminal of one and the negative terminal of the other. If there’s voltage, it’s a problem.
Or just beep out the grounds (zero ohm resistance)
Right. Thinking more about it, the common ground would also cause a short on one of the batteries. That could get really bad.
Yeah I know it’s fine to use two separate chargers, but I will be charging with one anyways. Maybe later on I will get another one just to make charging faster.
You released the magic smoke from somewhere. Things don’t produce smoke without a reason, you burned something and you need to figure out where first, doesn’t matter if it still works, something could short out and start a fire when you’re not around. Was it from the batteries, charger, power supply, or one of the wires?
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I’m well aware from where it came from and have already fixed the problem. And the smoke came from the charger and I have already replaced it even though it still worked. And as for the batteries I checked the voltage and it’s fine, everything else is fine.