ORIGINAL: quist
ORIGINAL: Vincent
ORIGINAL: SinCityJets
If you charge one battery at a time, there will not be any issues. Or if you want to charge both batteries at the same time, just disconnect ONE of the batteries from the receiver/power expander. This eliminates the common ground issue.
Chad
My A123 batts each have a seperate charge/balance lead so i dont have to disconnect them from the rx. The leads are stubbed off so i can get at them and hook up two cellpro 4 chargers. Chad is correct though, they soak up a charge so fast i typically just do one at a time.
V..
Even with the balance tab as a charge lead you still have a common ground.....I think.
Tony, correct. The black wire within the switch is still unbroken if wired to charge/balance thru the charge jack type switch....even if using the balance taps on the batts, the 2 batts are still connected together via the unbroken negative (black) wire in the switches. That's what most chargers cannot deal with as they sense on the low side, using the negative wire to provide info to the charger...problem is it is reading the charge info from the other battery/charger, since it is linked together, and that's the issue. Only way around this is to unplug 1 battery like Chad said, which to me is a complete PITA, find a charger that senses on the high side (positive red wire), or to break the gorund with a proper switch...the JR, Futaba, and MPI switches will not.