Question For AGM Battery Owners...
Are there folks out there who have decided they do not like AGM batteries and believe their AGM battery purchase was a mistake, and should have purchased standard flooded lead acid batteries instead? ...
Forum Discussion
PT wrote:
"For agm an amp-hour counter becomes essential because there is no way to check specific gravity"
I have a Trimetric for an AH counter with my Wets. It has a built in heat loss factor of 4%, but your real loss could be anything. You can adjust the Trimetric accordingly if you are fussy.
Normally to be at 100% SOC according to the hydrometer, while on solar, the AH counter has to go "over" by about 15AH on my four 6s to be at true "full" by SG.
It may be true I could do a calibration on the Trimetric to get that closer, but the only way to know if I got it right is by using the hydrometer.
You can't do that with AGMs. The thing is all batteries last years and years, so it is difficult to make proper comparisons when individual battery care of whatever type is such a variable.
"For agm an amp-hour counter becomes essential because there is no way to check specific gravity"
I have a Trimetric for an AH counter with my Wets. It has a built in heat loss factor of 4%, but your real loss could be anything. You can adjust the Trimetric accordingly if you are fussy.
Normally to be at 100% SOC according to the hydrometer, while on solar, the AH counter has to go "over" by about 15AH on my four 6s to be at true "full" by SG.
It may be true I could do a calibration on the Trimetric to get that closer, but the only way to know if I got it right is by using the hydrometer.
You can't do that with AGMs. The thing is all batteries last years and years, so it is difficult to make proper comparisons when individual battery care of whatever type is such a variable.
