The switching mechanism reminds me of the series parallel switch that was in the old Mack trucks. If sw3 were added bet a1+ and b1+ would this...
Normally bats connected in parallel Solid lines 12v system For 24v system bashed lines 12v system. Batt in parallel. s2 closed s1 open. Solid...
The design Two 12v batteries in series a and b. ( - bat a wired to + bat b ) + bat a and - bat b make 24v for windlass. +bat a and - bat a make...