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Winnipeg's avatar
Winnipeg
Explorer
Jun 02, 2018

Yamaha 1000w inverter for maintaining batteries

Hi, Sorry if this is a repeat question (I searched and didn't find). I have a MH with 4 @ 6v batteries, 2000w inverter, and residential fridge. I would like to maintain the batteries (while ...
time2roll's avatar
time2roll
Nomad
Jun 05, 2018
BFL13 wrote:
Little math exercise:

ASSume 85% efficiency for Iota and PD, and Iota at its 14.8 while PD at 14.4, each at 40 amps output. PD PF 0.7, ASSume same for Iota.

14.8 x 40 = 592w out, so at 85% = 696w in, so at 0.7 = 995VA

14.4 x 40 = 576w out, so at 85% = 678w in, so at 0.7 = 968VA

I read plenty of posts where PD will NOT produce rated amps at 14.4 volts. About 10% less.

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