|
550 is not "available" but only a percentage of the capacity...
I have 500 amps but lead acid has " available" 25 % I think it is and I try to use no more than 20 % ... AGM has more available but I don't know what it is and I just searched but could not nail it ..I never let the AGMs here go past 35%...1100 amp capacity so turn on the genny when 300 amps has been used as a rule.
The less discharge the longer they last and petrol is cheaper than replacing a battery bank.
I suspect you may need another set or need to run the genny half way thru the night..anyways I will get the experts opinion for you.
Alex
|