agm capacity test
I've installed 2 8d deka intimidators in my fiver. Closing in on 15 cycles. Would like to do a baseline test so I will have something to compare to in the future. What would be the proper way to prefo...
Forum Discussion
Good point about testing them individually in case one is much better than the other. I had the same issue with my "previously enjoyed" T-1275s when I got them.
I tested them as above together as a pair, but have not tested them individually, since I use them as a pair, so that is what I want to know.
However, I also have their individual SGs per cell, so I can tell that way that, while one is better than the other, it is not by that much. You can't get SGs with AGMs. OTOH the OP did let them sit after a recharge and they both held their voltages ok.
Also good point about loaded voltages where AGMs hold up under load more than Wets do. You will need to find your own values for that doing the ten hour test, so you can tell if things aren't "right" in the future doing a test. (There is a bit of "art" amongst the "science")
Even if not doing 50-90s but are on solar, you can still be comparing voltages with AH at any SOC and see if it "comes out right." IAW you are always testing for capacity if you don't mind doing a little math on a scrap of paper and use a calculator. (IE without using the bogus % SOC on the monitor just the accumulated AHs and voltage.)
On that, no idea with Victron, but with Trimetric on solar you have to turn off the auto reset of the AH accumulation or else it will reset to zero as soon as amps go negative when it gets dark and that will mess you up.
I tested them as above together as a pair, but have not tested them individually, since I use them as a pair, so that is what I want to know.
However, I also have their individual SGs per cell, so I can tell that way that, while one is better than the other, it is not by that much. You can't get SGs with AGMs. OTOH the OP did let them sit after a recharge and they both held their voltages ok.
Also good point about loaded voltages where AGMs hold up under load more than Wets do. You will need to find your own values for that doing the ten hour test, so you can tell if things aren't "right" in the future doing a test. (There is a bit of "art" amongst the "science")
Even if not doing 50-90s but are on solar, you can still be comparing voltages with AH at any SOC and see if it "comes out right." IAW you are always testing for capacity if you don't mind doing a little math on a scrap of paper and use a calculator. (IE without using the bogus % SOC on the monitor just the accumulated AHs and voltage.)
On that, no idea with Victron, but with Trimetric on solar you have to turn off the auto reset of the AH accumulation or else it will reset to zero as soon as amps go negative when it gets dark and that will mess you up.
