A
aurgathor
I opened up my UPS (APC Pack-UPS Pro 650) that
occasionally beeps on me and flashes a battery failed light.
Upon first measurement, I measured 13.78V (holy smoke!!)
across the battery. (AC was disconnected for a few minutes
before). Figured that's the surface charge, so I hooked up
a 12V domelight from my Cutlass until it dropped to about 12.7V
in a few minutes. Disconnected light, and now it's back to 13.08V.
So, how do I measure the capacity of the battery, or how do
I determine whether it's good, OK, marginal, or bad?
I have a couple DMMs, and got a sealed beam headlight I
could put on as a more meaningful (though slightly non-linear)
load.
The battery doesn't appear bad to me, though I have a feeling
that it may be a bit overcharged.
TIA,
aur
occasionally beeps on me and flashes a battery failed light.
Upon first measurement, I measured 13.78V (holy smoke!!)
across the battery. (AC was disconnected for a few minutes
before). Figured that's the surface charge, so I hooked up
a 12V domelight from my Cutlass until it dropped to about 12.7V
in a few minutes. Disconnected light, and now it's back to 13.08V.
So, how do I measure the capacity of the battery, or how do
I determine whether it's good, OK, marginal, or bad?
I have a couple DMMs, and got a sealed beam headlight I
could put on as a more meaningful (though slightly non-linear)
load.
The battery doesn't appear bad to me, though I have a feeling
that it may be a bit overcharged.
TIA,
aur