YC 1 wrote:
3 yrs old.. Batt 1 is ready for replacement and I would never buy one. Replace them both.
We do NOT buy batteries. We only rent them. In the RV world most batteries are murdered and not allowed to live a normal life. they work very hard and are tortured to death.
You can mess about with all kinds of tests and maybe revive it but I personally do not like sick batteries when I am boondocking. Dead or sick batteries lead to all kinds of other things not working properly.
Always in pairs or in whatever quantity you run. Same with my truck. I replace both at the same time, always.