Battery Draw Bogus Math? Peukert UPDATE 2
Update- 11 Oct 20, Update 2- 12 Oct 20 Thinking one 100AH battery that can be drawn down to very low SOC gives you nearly the same "usable AH" as two regular AGM or Wet batts, as seen advertized, ...
Forum Discussion
Test Results!!!
So it got down to 1.275 from 1.295 in each case, The Trimetric said 34.3AH with the first run at 11.5ish and today said 34.0 using 5.7ish, and it was 3 hours vs 6 hours.
Much as I would have liked to see it, the darn thing would not run longer.
So the "usable AH" claim is right for AH, but that was not in dispute. I don't have a clue why my Peukert idea for running times did not prove out in that test.
I thought the SG marker would hold as valid for my expected increase in the battery capacity and the Tri would show more AH with the lower amp draw due to the extra running time. Didn't happen!
I know the Tri does not do Peukert, but I thought the SG would. I was really careful taking the SGs so I can't claim "measurement error" either.
So it got down to 1.275 from 1.295 in each case, The Trimetric said 34.3AH with the first run at 11.5ish and today said 34.0 using 5.7ish, and it was 3 hours vs 6 hours.
Much as I would have liked to see it, the darn thing would not run longer.
So the "usable AH" claim is right for AH, but that was not in dispute. I don't have a clue why my Peukert idea for running times did not prove out in that test.
I thought the SG marker would hold as valid for my expected increase in the battery capacity and the Tri would show more AH with the lower amp draw due to the extra running time. Didn't happen!
I know the Tri does not do Peukert, but I thought the SG would. I was really careful taking the SGs so I can't claim "measurement error" either.
