Kach wrote:
It’s rated at 650 watts “maximum power continuous.” The 55a was 800 watts but figured I shouldn’t push my luck.
In that PowerMax link above, you see the 45 amper is given as 650w output.
That is not the input! You see 9 amps for that. Also note the 85% efficiency. So what does all that really mean.
First check the voltage they are using for output-- 650w and 45 amps means 14.44 volts. So that is good. Not using the 13.6 like some do.
Next find the input at 85% using 650w out. 765w. Ok , now do the 0.7 power factor on that to get 1093w required from the gen. (IMO the Honda might do that for a time, since they seem to do a little more than their ratings, but it is better not to overwork the equipment for it to last)
The 9 amps at 120v would be 1080w so that is near that 1093 so all comes out right for that set of specs.
IMO the Honda 1000 could run that 45 amper until the battery voltage got up somewhat. Your output watts is based on battery voltage, so the higher the battery voltage gets while the amps are still at 45 in the Bulk stage, the more input is required from the gen. Max power is just at the end of Bulk before amps taper. As soon as amps taper, the gen can start to ease off.
So it would almost get it done, but not to the end of the Bulk stage so that is not much use where you are doing a 50-80 and Bulk ends at around 80% SOC say. Your gen would overload at more like 75% so you only got a 50-75 done.