Forum Discussion
ktmrfs
Sep 27, 2013Explorer II
DryCamper11 wrote:
For heavy inverter use, I'm not sure why you'd care much about voltage drop. The inverter will compensate and hold the output AC voltage constant. I suppose your other appliances running on 12v will notice (fans slow or lights dim), but I wouldn't expect the voltage drop to bother typical low power 12v devices (control circuits etc.).
for heavy inverter use you WILL care when the battery voltage drops below the inverter cut off and the inverter shuts down. The drop is caused by the much higher internal resistance of a GC vs. most 12V batteries. Which for 6v GC WILL happen much sooner on the discharge curve than a 12V. And will happen while the batteries are still very high on the state of charge curve, like near 75% SOC with a 75A draw, probably even higher with a 125+A draw.
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