Jon R
Senior Member
It sounds like your AGM is sulfated beyond the level where it can be recovered with a desulfation cycle based on the resting voltage you stated.
If you are having to replace your battery anyway, that’s the ideal time to switch to lithium. There are a lot of companies selling lithium batteries, but read reviews, check out the Will Prowse videos on youtube, and choose one with good reviews from a company with some good history. You can’t go wrong with Battleborn if their form factor works for you, but most camper installations don’t require the extra ruggedness provided by their cylindrical cells and very high quality plastic case. There are other good choices with prismatic cells for less cost that are adequate for camper conditions.
A 100 amp hour lithium battery, a 30 amp dc to dc charger, and 6 awg wire from the truck battery to the camper battery is a good starting system you can add to later.
If you are having to replace your battery anyway, that’s the ideal time to switch to lithium. There are a lot of companies selling lithium batteries, but read reviews, check out the Will Prowse videos on youtube, and choose one with good reviews from a company with some good history. You can’t go wrong with Battleborn if their form factor works for you, but most camper installations don’t require the extra ruggedness provided by their cylindrical cells and very high quality plastic case. There are other good choices with prismatic cells for less cost that are adequate for camper conditions.
A 100 amp hour lithium battery, a 30 amp dc to dc charger, and 6 awg wire from the truck battery to the camper battery is a good starting system you can add to later.