| We must remember a nasty little thing called the Peukart Effect. You may think you just drew 50 AmpHrs of electricity in 20 minutes. You didn’t if it was: Battery Size..........Rate of discharge....Hair dryer...Amps drawn/...Actual Used AmpHrs (20 hrs)............20 hrs................Amps.........20 hr rate......... AmpHrs 400 ............................20 Amps.................150...............7X....................80 100 ..............................5 Amps.................150..............30X......... .........Dead You were discharging the battery bank at a rate 150 Amps. Rated batteries capacity is the multiple of 20 hrs times the rate of discharge that empties the battery in that time. If you want to use a hair dryer think about a 1000 AmpHr battery bank. |