Switch to good Lithium batteries, the onboard BMS monitors temperature, load and charging and will automatically stop the batteries from charging if too cold or charge voltage is excessive. I use 2-BIg battery 170ah lithium batteries and could not be happier!! I leave my coach plugged in at all times. If power goes out the solar tops them off.
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2020 Montana 3781RL
2020 GMC 3500 Denali HD Diesel SRW
20k Demco slider hitch
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