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72 volt GEM Car battery recovery technique. In this video we use a six bank 10 amp battery charger to independently boost the six deep cycle gel batteries.
The Problem: Gem Car charger will not turn on because the battery "pack" voltage is too low.
Solution: Charge each battery with an external (portable) 12v 10, 15 or 20 Amp charger.
Goal: The on-board charger will function and batteries will not be left in a damaging state of discharge.
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Battery brand is Leoch p/n LPG12-100. Another brand of gel deep cycle battery is Deka 8G31. AGM deep cycle batteries do not last as long as the gel types.
The six 12v Gel deep cycle batteries are connected in Series
The battery disconnect switch or kill switch should be used anytime the Gem car is idle and not on charge. The car has a parasitic battery draw
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