Forum Discussion
BFL13
Jun 03, 2017Explorer II
otrfun wrote:
Assuming one was powering a residential fridge with an inverter that drew 12a (at 12vdc) when the compressor cycled, how long would it take to discharge a bank of four, GC2, 6-volt batteries from 12.7 to 12.2 volts, under a worst case, full-on, 100 percent duty-cycle?
50% of 440 = 220AH/12a = 18.33 hours, but that does not allow for Peukert. The 20 hr rate for 440 is 22 amps not 12, so it should take longer than 18.33 hours. Looking at it another way, at 12a draw the capacity is more than 440 but I don't have the tables to show how much more.
Also ignoring "inverter creep" where its amps draw goes up as battery voltage falls, which will make average amp draw a little higher than 12 but do we need exact numbers here?
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,189 PostsLatest Activity: Jan 21, 2025