Thor Forums

[Yosemitebob]

Battery standing (0 amps for 6 hours or more)
90% full (a standard charging system will not charge 100%) 12.7v
80% 12.5
60% 12.2
40% 11.9
20% 11.6
0% (empty) 11.4
empty is also irrealvent as empty while discharging (depends on amps and temp) can be 10.5 - 11.5


Some other helpful figures:
Battery full with light loads (depends on amps drawing) 12.4-12.7
Battery full with heavy loads (depending on amps drawing) 11.5-12.5


Have you checked the converter/charger to make sure it is charging properly, water level in battery?


It seems you have a drain somewhere, a rather large one, so should be easy to find at least. You need a meter, they come pretty cheap now-a-days and should be part of your toos set anyway. After charging your battery full as you can, with the system off (store) then you start testing the battery and circuits and one place to start is your 12v fuses at your panel. But first take a measure at the battery write it down. One or two hours later take another measurement write it down, if it is losing voltage, test the cells, I saw it mentioned in one of the above clips. If the cells are testing good, then go to the panel and start there.


Don't forget to check all your connections, they can sometimes delvelop excessive resistance (if loose) and this causes loss of capacity as well.