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
time2roll wrote:
You need to compare the actual peukert function for each battery. As the internal resistance drops there is much lower effect due to high load. Also peukert is an exponential curve. Much lower effect at anything less than the 20 hour rate.
Came across this table in an AGM battery spec;
1 amp rate -125AH
100 hr -----118AH
20 hr-------105AH
10 hr-------100AH
so the rates for that are 1, 1.18, 5.25, 10
It looks like if you use half the 20 hr rate you would get maybe thrice the time? That's a lot.
Is that right?
