Battery voltage checking
Ok ,I have learned not to run a 12 volt battery below 12.1 to maximize lifespan. My question is : do you check voltage under load or at rest. Thanks,Mike
Forum Discussion
Poor mans volt checker, (under load)
After dark, with 1 or 2 incadesant lites on, turn on a facuet.
If lite hardly dims, batts in good shape till morning
If lite dims considerably,.....its charge time !
I don't use that method anymore. I know exactly what my LED volt meters should read as I'm headed for bed.
If the one closest to the batteries reads 12.4, I'm in great shape.
If its reading 12.3, I'm good thru the nite (no heat) and solar or Genset
will fix it in the morning.
I don't remember it ever reading 12.2
The other LED voltmeter right at the tv, (sat tv playing) is another story.
This one is reading inverter input under load.
11.5, I'm still in good shape
11.0, still ok, but better think of recharge
10.5, inverter alarms, only happened once under testing.
After dark, with 1 or 2 incadesant lites on, turn on a facuet.
If lite hardly dims, batts in good shape till morning
If lite dims considerably,.....its charge time !
I don't use that method anymore. I know exactly what my LED volt meters should read as I'm headed for bed.
If the one closest to the batteries reads 12.4, I'm in great shape.
If its reading 12.3, I'm good thru the nite (no heat) and solar or Genset
will fix it in the morning.
I don't remember it ever reading 12.2
The other LED voltmeter right at the tv, (sat tv playing) is another story.
This one is reading inverter input under load.
11.5, I'm still in good shape
11.0, still ok, but better think of recharge
10.5, inverter alarms, only happened once under testing.
