Battery recommendations for 1500W inverter

road-runner wrote:

BFL13 wrote:
I measure my voltage drop at the batteries with the Trimetric monitor. That includes the wiring and batteries for cause of drop at any amps. Of course the actual voltage 'seen' at the inverter is less across the wiring, but the drop seen is the same, just from a lower starting point.

If I may nitpick,the voltage drop in the wiring will increase as the battery voltage goes down. Assuming a constant load on the inverter, a 10% drop in the battery voltage will lead to a ~10% increase in the inverter's DC current draw. Most likely a much smaller factor than the battery voltage drop, so not much of a factor in the big picture.

Good point! Inverter "creep" as the voltage drops the amps go up to try to maintain watts.

I am trying to see how that works with inverter-gens too at 120v and 120 amps. Seems to be there, but I don't have much data yet.

All those electrons sure manage to keep busy :(