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
MrWizard wrote:
I'm thinking your logic is Biased
Lithium 100ah use 80ampHrs reach 20% SOC
Recharge do it again tomorrow
Agm or FLA 200 amp hrs, use 80 amp hrs
Draw down to 60% SOC
Recharge do it again tomorrow
Which battery/bank is going to suffer the most degradation, which is going to give more hours, days, years of service,
Which will need the lesser amount of generator run time to recharge the same 80 amp hrs
Your statements above are only correct, If you plan draw them to zero SOC full discharge total output, and throw them away,
My only thought was that the 80AHs are not the same running time at 5 amps. At 5 amps from the 100AH batt, that is 16 hours time.
5 amps from a 200AH bank would be a longer running time.
If your "use" is a 5 amp draw, then your "usable time" (vs a "usable AH") is more with the two batts.
IMO you have to do the same activity or "use" , which is the same amps draw, to make the "usable" comparison.
