Hi brulaz,
The main reason for lower voltage drop is there are twice as many cells in paralleled 12 volts vs series 6 volts. That means each cell in the 12 volt configuration provides 1/2 the amps that the 6 volts has to, provided that balanced wiring is used.
brulaz wrote:
SoundGuy: AFAIK a pair of Marine G27s or G31s in parallel should have less V drop than a pair of GC2s under high loads. Their design specs include motor starting, so I guess they have more surface area or whatever that deals with that issue. But they usually have less Ah and can't do as many cycles as GC2s.
