Charging external battery
What are the pro/cons/concerns? I want to charge my trolling (marine semi-deep cycle) battery (80 AH) using solar in the afternoon after its been discharged 30-50%. House batt SOC would be 90% or ...
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X2 on RJ's comment
I do it all the time - similiar but have an extension cable RV<>Boat - Two GC 6Vdc batteries for trolling with the Ipilot enabled Terrova - been doing it for many years while camping and fishing - way better solution that firing up the generator
Works great - My PV array gets me in excess of 40 amps when in direct sun. Yes sure the 75ft 8awg extension cable from the RV to the boat has a voltage drop but it really does not matter - done with fishing for the day plug her in and enjoy a cold beverage - Good to go another day - I additionally added a switchable system to charge the trolling batteries from the Yamaha F90 too bad the F90 only puts out 25amps and uses almost 9 amps just to run the engine
Enjoy the fishing
PS - Never bothered to check the charge current best guess the batteries get a good 10 to 15 amps for a short time when really discharged - The voltmeter in the boat reads 14.4V after a short 30 minutes or so
I do it all the time - similiar but have an extension cable RV<>Boat - Two GC 6Vdc batteries for trolling with the Ipilot enabled Terrova - been doing it for many years while camping and fishing - way better solution that firing up the generator
Works great - My PV array gets me in excess of 40 amps when in direct sun. Yes sure the 75ft 8awg extension cable from the RV to the boat has a voltage drop but it really does not matter - done with fishing for the day plug her in and enjoy a cold beverage - Good to go another day - I additionally added a switchable system to charge the trolling batteries from the Yamaha F90 too bad the F90 only puts out 25amps and uses almost 9 amps just to run the engine
Enjoy the fishing
PS - Never bothered to check the charge current best guess the batteries get a good 10 to 15 amps for a short time when really discharged - The voltmeter in the boat reads 14.4V after a short 30 minutes or so
