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life (not!) batteries

Discussion about Tx, Rx, Servo's, Batteries, Chargers, and all the other things we like to talk about..
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MarkDev
Posts: 186
Joined: 19 Mar 2015, 10:41
Location: Dowset

life (not!) batteries

Postby MarkDev » 01 Jun 2017, 14:31

Any suggestions what to do with two 3800mah 2s life batteries that are depleted? I left them atrached to a dual power unit but turned off. My chargers won't do anything. End of life?

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Barry_Cole
Posts: 815
Joined: 10 Mar 2015, 09:30
Location: Hampshire UK

Re: life (not!) batteries

Postby Barry_Cole » 01 Jun 2017, 16:26

Try charging them s a Nicad, just to get the voltage up. If that does not work, then off to the re-cycling unit....

BC.

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Stuart Ward
Posts: 95
Joined: 21 Mar 2015, 18:23
Location: Pukekohe NZ

Re: life (not!) batteries

Postby Stuart Ward » 01 Jun 2017, 18:33

I have looped them in series to fool the charger and changed them for a short while until the voltage came up. Then I finished charging as normal. But don't leave them unsupervised. If you have any doubts a new battery is cheaper than a new model
Stu

MarkDev
Posts: 186
Joined: 19 Mar 2015, 10:41
Location: Dowset

Re: life (not!) batteries

Postby MarkDev » 02 Jun 2017, 07:38

Thanks I'll try that. :D

MarkDev
Posts: 186
Joined: 19 Mar 2015, 10:41
Location: Dowset

Re: life (not!) batteries

Postby MarkDev » 05 Jun 2017, 12:29

Both batteries placed on Nimh charge for 5 mins then onto life charge and now holding their charge. :D

Ta

M

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Barry_Cole
Posts: 815
Joined: 10 Mar 2015, 09:30
Location: Hampshire UK

Re: life (not!) batteries

Postby Barry_Cole » 05 Jun 2017, 12:38

All ready for MW, next week then.

:D :D :D :D

BC

John Mcnamara
Posts: 58
Joined: 19 Mar 2015, 15:43
Location: Leeds
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Re: life (not!) batteries

Postby John Mcnamara » 05 Jun 2017, 16:16

I would check them thoroughly and see if you can get meaningful capacity out of them before commiting aviation with them. If they pass the test, you are lucky, ask me how I know! :roll:
John

Tom Pack
Posts: 38
Joined: 18 Mar 2015, 23:33
Location: USA

Re: life (not!) batteries

Postby Tom Pack » 06 Jun 2017, 12:51

Straight in the trash with them.......batteries are cheap.....airframes are not.

MarkDev
Posts: 186
Joined: 19 Mar 2015, 10:41
Location: Dowset

Re: life (not!) batteries

Postby MarkDev » 12 Jul 2017, 14:39

The batteries are holding a percentage of their charge, losing about 5% since, would I trust them, on balance not, don't want anymore disarsters!


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