Forum Discussion

howardwheeler's avatar
howardwheeler
Explorer
Mar 26, 2017

Charging specs for group 29HM Deep Cycle Marine/RV battery

Last year I had to replace my 4 12 volt batteries in my fifth wheel on an emergency basis. I had someone staying in it, and one of my old batteries shorted and brought the whole bank down. I had been ...
time2roll's avatar
time2roll
Nomad
Mar 26, 2017
Anything 14.3 to 14.8 should be fine. I have mine set toward the low end.
Even more important IMO is the programming to adjust absorption time based on the start voltage. This allows very short absorption when in storage or very light use. The time can automatically extend when the start value is lower. And for extreme use there is a setting for very low battery to stay in absorption all day.

If you go on the low side you can set equalization a bit higher say 14.8 to give them a boost every so many days you program.

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