affordable 2000w inverter

BFL13 wrote:
According to that calculator, 1.2v drop with 24v using cu 1/0 AWG and 50 amps would be 120 feet round trip!

The 24v inverter alarms at 22.4 and a 12v inverter alarms at about half that say 11.2 (11 for mine) so at 24v 50% SOC you have that 1.6v window. With the 12v you have a 0.8v window.

So it is true that "good enough" for still being able to make toast at 50% SOC is equivalent at 1.2 vs 0.6, but that does not "excuse" the 1.2, which should be 0.3

I am very confused.

Wire has a fixed resistance per metre (Rw).
And if you double the voltage you need half the current to carry a fixed load (wattage). Say 100A at 12V and 50A at 24V.

So Vd = 100 x Rw, at 12V
and Vd = 50 x Rw, at 24V

So for the wire alone, doubling the V halves the voltage drop.

But I don't believe this is the case for the batteries. See the previous post. In fact it seems that doubling the battery voltage by switching from parallel to serial batteries, doubles the V drop at the battery bank.

It IS very confusing.