Choosing an Inverter
If I'm in the right place... Looking for an inverter that will run a 1875w +/- hair dryer, 700w microwave (which really takes 1100w), and both sides of an electric blank, the controllers say 180w. ...
Forum Discussion
To put it simply, Pekert effect at high currents makes battery losing AH faster than it "should've".
Here is Peukert spreadsheet. Peukert exponent for flooded batts is about 1.3.
Ex, for a common install of a pair of 6V T105 batteries, if you run 160A load, the "corrected current" will be 355A. So, in 10 minutes it will lose 355/6= yep, almost 60 AH. Together with your other loads it's easy to discharge the battery below 50% in one day.
With 4*T105 it's getting TAD better (not much), with "corrected current" dropping to 290A. Still a lot of discharge, I would seriously reconsider that 1875W drier.
Btw, beware of MW ratings - those printed on the box. If it reads 1000W, it means it draws 1400-1500W @110V on the High. This has nothing to do with Peukert.
Here is Peukert spreadsheet. Peukert exponent for flooded batts is about 1.3.
Ex, for a common install of a pair of 6V T105 batteries, if you run 160A load, the "corrected current" will be 355A. So, in 10 minutes it will lose 355/6= yep, almost 60 AH. Together with your other loads it's easy to discharge the battery below 50% in one day.
With 4*T105 it's getting TAD better (not much), with "corrected current" dropping to 290A. Still a lot of discharge, I would seriously reconsider that 1875W drier.
Btw, beware of MW ratings - those printed on the box. If it reads 1000W, it means it draws 1400-1500W @110V on the High. This has nothing to do with Peukert.
