So I left my boat up North at the end of October thinking I'd be back up to use it at the end of November. Batteries were charged, left it on the trailer. When I couldn't make it back up, Dad tarped it for me.
Well, end of Dec I was able to pick it up and bring it home finally. Had been cold up there. Parked it in the garage.
1st thing I did was plug in the on-board Minn Kota 210D on-board charger. Both registered red lights on the charger...which means bad connection or check connections. I did and everything checked out fine...I found that extremely odd. I tested the Trolling motor, lights, etc...everything was dead. I left the charger plugged in for a few days.....still red. Pulled both batteries and took them inside. could here sloshing in them. Took the voltage tester to test the charger, which appeared fine.
Let them warm up for a day and put a charge on each..both took a good charge. Put them back on the boat connected the charger and no problem...charger charging both just fine.
Wondering how both batteries apparently drained down to under 4v and whether I will probably need to replace them both now? Also wondering if I should just leave the batteries plugged in all winter or just remove both and leave in the house?
Well, end of Dec I was able to pick it up and bring it home finally. Had been cold up there. Parked it in the garage.
1st thing I did was plug in the on-board Minn Kota 210D on-board charger. Both registered red lights on the charger...which means bad connection or check connections. I did and everything checked out fine...I found that extremely odd. I tested the Trolling motor, lights, etc...everything was dead. I left the charger plugged in for a few days.....still red. Pulled both batteries and took them inside. could here sloshing in them. Took the voltage tester to test the charger, which appeared fine.
Let them warm up for a day and put a charge on each..both took a good charge. Put them back on the boat connected the charger and no problem...charger charging both just fine.
Wondering how both batteries apparently drained down to under 4v and whether I will probably need to replace them both now? Also wondering if I should just leave the batteries plugged in all winter or just remove both and leave in the house?