E-meter [RE-wrenches]

[Todd Cory, Bald Mt. Solar]

It is my understanding that ALL amp hours are equally accurate on discharge
(considering the accuracy of the shunt). It is on recharge, when they count back
up to "0" where the inaccuracies come in. If a meter does not accurately
calculate the efficiency of the  batteries, the counting can be quite inaccurate.
Then add another discharge / charge cycle without zeroing out and you might begin
to see huge discrepancies between what the meter says and what the batteries are
doing.

Don't forget to include the ~20 watt wasteful idle current of the inverter.
Better to have them sleep when not needed than to run all the time. This really
adds up to quite a phantom load over time.

Todd Cory





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