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Old 05-19-2017, 08:24 PM   #1
Brand: Thor Motor Coach
Model: Thor Tuscany 40DX
State: Colorado
Posts: 79
THOR #5043
GC2 series pairs capacity

I've read a lot here about not mixing batteries, new with old, different brands, etc. Folks state that a bad battery will destroy the good one(s) paired with it? Can some of you tell me why this is so? I have 3 series pairs of GC2's for a total of 680 amp hours and don't seem to be getting anything near that amp hours capacity? My Magnum 100 amp charger will put 105 amps out and I have measured almost equal charge/discharge current in each of the 3 series pairs. Seem OK to me but don't like the results?

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Old 05-20-2017, 06:05 AM   #2
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TyCreek's Avatar
Brand: Thor Motor Coach
Model: Axis 24.2
State: Idaho
Posts: 531
THOR #1944
You'll get the total capacity of about 3x the weakest parallel pair. If all 6 batteries are 100% then you'll get closer to the assumed or rated capacity. It only takes one to slowly destroy the rest and speed up the death of the weakest.
Axis 24.2 "was" tug'n a JK
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