Wisconsin | Andy Bivens - 9/2/2024 17:42
If I had any sense I would have disconnected the cables. My combine has a master disconnect and I have done it the past 2 years and has worked fine. I currently have one truck with 4 batteries another with 2 and another with 3 all dead at the same time ha.
9 dead batteries at the same time gets expensive, that's not good for them, none will be the same and some won't hold a charge. That's when you want the big charger at 30 amps for 12 hours, then pull the ground cables off and let them sit to see if they all hold a charge overnight, or a week, or as long as you have. If you have to work that day, then disconnect the grounds when you shut it off, and check the voltage in the morning. Leaving trucks for more more than a week you want to disconnect the ground cable so the batteries aren't being drained by low amp draw, and more than a month you want all the grounds disconnected so one bad battery doesn't kill the rest of them.
A $150 solar panel with a $100 controller would charge three batteries from dead in one sunny day, but you wouldn't want to leave them unattended that way. I'm sure that $100 controller could be set to float with bluetooth, but not as simple as a smart charger vs big dumb charger. Maybe have the panel set up and every two months move the cord around to different vehicles for a day or two each. |
Multiple battery charging ideas
