No Maintenance Coach Barttery
My coach battery is on a pull out slide that is almost impossible to pull out far enough to check or add water to the back cells. It's 6-yrs old, doesn't hold a charge, and I want to have it replaced ...
Forum Discussion
Yes, AGM is the only thing that is maintenance free.
But I will never buy another battery from Universal. Made in China. They do specify both 13.x float voltage and 14.x Absorption voltage, and my solar controller gives them precisely what they want.
The only little problem is that they somehow gone completely sour by sitting several months in storage before I installed solar. They self-discharged to 55-60% which is right at the allowed minimum - according to the manual - and developed a HUGE self-discharge current afterwards. This wasn't the agreement :). Manual didn't say anything about that. By "huge" I mean 3%C a day.
But I will never buy another battery from Universal. Made in China. They do specify both 13.x float voltage and 14.x Absorption voltage, and my solar controller gives them precisely what they want.
The only little problem is that they somehow gone completely sour by sitting several months in storage before I installed solar. They self-discharged to 55-60% which is right at the allowed minimum - according to the manual - and developed a HUGE self-discharge current afterwards. This wasn't the agreement :). Manual didn't say anything about that. By "huge" I mean 3%C a day.
