BFL13 wrote:
EDIT--read the 3012 manual on charging. So the BMK is the monitor with the shunt. In your case the Bulk stage was at constant amps of about 105 amps. 105/220 = 48% charging rate.
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What is Inverter amps vs BMK amps? Important to use the actual amps to the battery for this calculation.
That would be the amps on the charger to battery wires, where the voltage will be higher at the charger end due to voltage drop.
You have the BMK voltage higher but the BMK amps lower (amps would be the same on those wires, so what's with that?). Please explain.
Yes BMK is battery monitor kit, it's the shunt and a voltage sense that goes to the battery, so it gives very accurate amps and volts.
Yes I quickly wrote the previous post and forgot about the inverter amps vs shunt amps. So the inverter tops out at 125 amps, but only 105 to the battery due to wiring losses (3-4 feet of 4/0 wiring) and a few amps to the loads, which should just be my computer equipment and maybe a led light or to at the time. Magnum inverter amps is derived from the AC amps if I remember right and not a true measurement of the DC side, thats why it has no decimal places so that would include conversion losses too.
The BMK voltage was slightly lower when topped out at bulk, but also the voltage reading is more accurate from the BMK vs the inverter which is only one decimal. Would be nice to get a good multimeter on both sides while running to really see accurate drop.
Bottom line the BMK measurements are the most accurate as far as what the batteries are getting, the Lifelines are very impressive AGM batteries none the less.