Forum Discussion

gperky's avatar
gperky
Explorer
Nov 26, 2015

Is 12.5 volts sufficient for battery maintenance?

I have 9 batteries. 5 are on Battery Tenders that maintain at 13.2 volts. 2 are on larger automatic chargers that maintain at 13.2 volts. The last 2 are on cheap Schumacher and Harbor Freight charger/...
Bobbo's avatar
Bobbo
Explorer II
Nov 27, 2015
RJsfishin wrote:
There are only 3 reasons that voltage would be reading 12.5 while on a maintainer charger.
1- the battery is charging and voltage is slowly getting higher
2- the battery is junk
3- the charger is junk
What is so hard to understand about that ??
There ain't no big long drawn out reply going to change that !

This is true. If after 12 to 24 hours, the voltage is STILL 12.5v, you can eliminate option #1.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,191 PostsLatest Activity: Jan 19, 2025