Back Charging of Batteries

Back Charging of Batteries

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16 May 2010 at 12:21 #3568
Peter Morris 5
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@petermorris5
Advert

16 May 2010 at 12:21 #26813
Peter Morris 5
Participant
@petermorris5
I notice that one of MB’s advertisers is selling a device which ‘eliminates the risk of batteries back charging’ when wired in parallel. Can anyone explain this phenomenon to me please?
16 May 2010 at 16:23 #26814
Mike Davidson
Participant
@mikedavidson22772
If you have two batteries wired in parallel, and oneis at a lower state of charge, then the lower charged battery will tend to take powerfrom the other.If you look carefully at the orientation of the cells within the lower charged battery, then, they will have a positivecharge on the negative end and a negative charge on their positive end, and it has been known for thewhole battery to retain a chargeof reverse polarity which may well cause grief in the electronics of your receiver or electronic speed control. The only safeguard against either of these is to install a diode in series withthe battery under charge or electronics you wish to protect. I never run batteries in parallel, but I buy higher capacity cells if I can afford them. When I first started, I bought Cyclone cells which had a massive capacityand were capable of giving enormous power
16 May 2010 at 19:06 #26818
Peter Morris 5
Participant
@petermorris5
Thanks for that Mike – I’ll be taking one of those batteries out right now!
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