This connects to batteries when either one of them sees a charging source, charger or alternator and isolates them when the source is removed. This is a good way to return some capacity to your trolling motor when you are moving to the next spot.
2015 Seaark 1872 MV CC Etec-90
Helix 12 CHIRP SI, HB 1199, MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic
Bitter Gun Owner