Charged battery the wrong way! - Electronic Circuits Projects Diagrams Free

hantto · 28th January 2004, 04:54 PM

Hi, I did the stupidest thing today. I charged a batterypack of 4 NiCds the wrong way, I put the negative to positive and positive to negative. Then I wondered why my R/C equpment didn't work. Then I measured the voltage and it showed -0.6v &: Are these bateries now gone for? Or will they work normally if i charge them again the right way? Will their capacity drop? or any other side effects?

Thx, Hantto (:

B-o-b · 28th January 2004, 05:37 PM

Well, they might be shot, but it wouldn't hurt to just go ahead and try charging 'em again... the right way of course (hehe). If they won't take a charge after that, then yes, I'm afraid they may be damaged. Hope for the best tho!

Cheerz,

Bob

evandude · 28th January 2004, 08:23 PM

I just happened to be looking at some ni-cd charging schematics and info today... from what I read, it looks as though charging a nicd battery in reverse is a pretty sure way to kill it. that's part of the reason it's good to condition the individual cells once in a while, because sometimes one cell will get discharged before the others, but current will still be flowing through it, so it will actually start to charge in reverse from the other cells... which usually kills it.

you can try charging them again normally, but I wouldn't get my hopes up if I were you.

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28th January 2004, 04:54 PM	(permalink)
hantto	Charged battery the wrong way! Hi, I did the stupidest thing today. I charged a batterypack of 4 NiCds the wrong way, I put the negative to positive and positive to negative. Then I wondered why my R/C equpment didn't work. Then I measured the voltage and it showed -0.6v &: Are these bateries now gone for? Or will they work normally if i charge them again the right way? Will their capacity drop? or any other side effects? Thx, Hantto (:

28th January 2004, 05:37 PM	(permalink)
B-o-b	Batteries Well, they might be shot, but it wouldn't hurt to just go ahead and try charging 'em again... the right way of course (hehe). If they won't take a charge after that, then yes, I'm afraid they may be damaged. Hope for the best tho! Cheerz, Bob

28th January 2004, 08:23 PM	(permalink)
evandude	I just happened to be looking at some ni-cd charging schematics and info today... from what I read, it looks as though charging a nicd battery in reverse is a pretty sure way to kill it. that's part of the reason it's good to condition the individual cells once in a while, because sometimes one cell will get discharged before the others, but current will still be flowing through it, so it will actually start to charge in reverse from the other cells... which usually kills it. you can try charging them again normally, but I wouldn't get my hopes up if I were you.