Back Charging of Batteries

[Peter Morris 5Participant @petermorris5]

[Peter Morris 5Participant @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?

[Mike DavidsonParticipant @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

[Peter Morris 5Participant @petermorris5]

Thanks for that Mike – I’ll be taking one of those batteries out right now!

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