You are talking about long term, I am talking about short term. If the power train can recharge 1 large battery THE MAIN BATTERY and have the 2 small battery,s off the small 12 battery's can get it started with high tec revolving recharging. Only use 2 of the 12 battery,s to get you moving then the power train comes in and charges the larger battery and the 2 small battery's are slowly recharged as we still have 10 other small battery,s to use in other circumstances. Just one way of thinking.
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