I just done some capacity tests on my VoltaX 100AH Li batteries X 2 in parallel, giving a theoretical 200AH capacity.
I ran down the batteries with a 2000W inverter on a 1 KW halogen lamp. Occasionally, I also run an additional 800W blower for a short period of time.
Here are the results of the final moments of the discharge. At200AH ( @ 86A ), 207.44 AH ( @ 69.6A ) & 207.44 AH ( @83.7 A) and also 207.44AH ( @ 0A ). I could have taken it further to 220 AH and see what happened, but I thought no point in damaging the battery. It has already delivered beyond spec capacity-wise.
I also notice, that while just using my old Pb Acid battery charger, charging them at14A, the charging current would drop to zero once the battery voltage got up to 14.2 V or so. Please comment on this too. And I took that as full capacity for this test. The discharged capacity in the above is counted down from this charge.
Comments, please.
p.s. this is the second test I've done, the first one without capacity meter, just by time and current measurements, it was well within its specified AH capacity.
I ran down the batteries with a 2000W inverter on a 1 KW halogen lamp. Occasionally, I also run an additional 800W blower for a short period of time.
Here are the results of the final moments of the discharge. At200AH ( @ 86A ), 207.44 AH ( @ 69.6A ) & 207.44 AH ( @83.7 A) and also 207.44AH ( @ 0A ). I could have taken it further to 220 AH and see what happened, but I thought no point in damaging the battery. It has already delivered beyond spec capacity-wise.
I also notice, that while just using my old Pb Acid battery charger, charging them at14A, the charging current would drop to zero once the battery voltage got up to 14.2 V or so. Please comment on this too. And I took that as full capacity for this test. The discharged capacity in the above is counted down from this charge.
Comments, please.
p.s. this is the second test I've done, the first one without capacity meter, just by time and current measurements, it was well within its specified AH capacity.
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