Hello… I remade a flatbed truck into real survival transport (spikes, steel platings, all that stuff), but one thing bugs me - it has one V6 motor, 7 gas tanks, one large electric motor, 10 solar panels, 10 storage batteries. Gasoline motor works ok, but batteries never seem to charge up, no matter how sunny the weather is. Is it because I have too much batteries, or is it a bug? Also, how can you switch from V6 to el. motor (leaving the other one turned off) ?