"Charge Efficiency Factor CEF?"
Like borrowing. You extract so much, but expected to put back a little extra to "settle the debt". Predicated on measuring seasoned new batteries. Expressed as a figure like 1.11, or 1.18, or 1....
Forum Discussion
Because of the automatic mindset prevalent today.
My solar controller can have a charge efficiency setpoint automatic or fixed, but other charging sources seem to like to make it choose 99% on automatic.
I set it to a fixed 92% and when amps taper to 0.4 for a 90AH AGM, the AH counter is usually down to 0 from full, or relatively close.
Still really do not trust it. I always look at amps at absorption voltage, then raise an eyebrow at the AH from full figure my battery monitor is displaying.
My solar controller can have a charge efficiency setpoint automatic or fixed, but other charging sources seem to like to make it choose 99% on automatic.
I set it to a fixed 92% and when amps taper to 0.4 for a 90AH AGM, the AH counter is usually down to 0 from full, or relatively close.
Still really do not trust it. I always look at amps at absorption voltage, then raise an eyebrow at the AH from full figure my battery monitor is displaying.
