AGM vs Flooded Bulk Times
PT keeps asking whether AGMs will spend more time in Bulk at the same charging rate.
I found a good example where that can be measured, using ah64id's test with his PD4655 on his pair of Lifeline AGM GPL-6CT 300AH batts starting at 50% SOC.
He was able to get 55amps (averaging 56-54) for 90 minutes before amps tapered for the Absorption stage.
So that was 55/300 = 18.7% charging rate (same as 41 amps on 220AH)
And 90 min of 55 is 82AH plus 150AH =232AH/300 = 77% SOC
So compare that with my ugly graph numbers using Wets and we see that on the 220AH bank 18.7% rate is 41 amps and that hits the curve at 77% SOC.
Ta da! It is the same. AGMs and Wets are both the same kind of battery so why wouldn't they be the same? Anyway, that ought to answer PT's question, at last. :)
I found a good example where that can be measured, using ah64id's test with his PD4655 on his pair of Lifeline AGM GPL-6CT 300AH batts starting at 50% SOC.
He was able to get 55amps (averaging 56-54) for 90 minutes before amps tapered for the Absorption stage.
So that was 55/300 = 18.7% charging rate (same as 41 amps on 220AH)
And 90 min of 55 is 82AH plus 150AH =232AH/300 = 77% SOC
So compare that with my ugly graph numbers using Wets and we see that on the 220AH bank 18.7% rate is 41 amps and that hits the curve at 77% SOC.
Ta da! It is the same. AGMs and Wets are both the same kind of battery so why wouldn't they be the same? Anyway, that ought to answer PT's question, at last. :)
