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Originally Posted by Cartwheels
Oh! ok, I see what your saying now. At higher voltage your not pulling as much current. It all makes sense when you stop and think about it. I love learning about this stuff. At higher votage can you also go down on the gauge of wire you use? My guess is, only by a small amount.
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Think of it as a
power transfer. V x A = power. Higher voltage = less current for a given power. That's kinda the same idea behind using higher voltage on a BL motor with a higher amount of turns (lower KV/more resistance). Requires less current.
You could go down on the gauge, but the current is still high-ish, especially using 4 chargers. Now, if you only use two like you mentioned, you could go with 8 gauge. I really wouldn't go down any lower than that unless you are charging right by the battery. The two big factors in choosing a wire gauge is the wire length and current. Any wire has some resistance, generally expressed as ohms per foot (or milli-ohms per foot since it is relatively small). Longer wire=more resistance. Current through a resistance creates a voltage drop. Higher current=higher voltage drop on the wire itself. Higher voltage drop = less voltage at the charger.
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