Improving a "Used" Battery Can be Done
I got a used pair of Trojan T-1275s (150 AH each , 82lbs) that the previous owners (new and used golf car dealer) claimed were at about 86% as good as new before they put them on the pallet where they sat for 2 1/2 months before I came along.
So first I found them to be about 240AH out of rated 300 or 240/300= 80%. I got them home for a few days and did alternating Equalizing (raises voltage to 15.7v) and Reconditioning (pulse with no rise in voltage) sessions using the VEC1093DBD while checking SG meantimes.
All that nursing got SG to more like 1.265 instead of 1.255 at "Full" on average. So I figured I was getting them back to more like 90% from as new.
Now am using them while camping as part of a four- battery team with two 6s (232AH) as the other pair. Did a 50-90 today on the whole bank (solar has been weak lately) and various check points show from that, the bank is close to 490AH, maybe 500, so that means the T-1275s are now near 270 and the 6s near 230. 270/300= 90%. This goes with that improved SG I got from the nursing I did with Equalize and Recondition.
All of which shows:
-alternating Equalize and Recondition does do some good, and
-used T-1275s if low cost, can be "worth it" if you happen to stumble across some. (otherwise, as new, they cost too much)
So first I found them to be about 240AH out of rated 300 or 240/300= 80%. I got them home for a few days and did alternating Equalizing (raises voltage to 15.7v) and Reconditioning (pulse with no rise in voltage) sessions using the VEC1093DBD while checking SG meantimes.
All that nursing got SG to more like 1.265 instead of 1.255 at "Full" on average. So I figured I was getting them back to more like 90% from as new.
Now am using them while camping as part of a four- battery team with two 6s (232AH) as the other pair. Did a 50-90 today on the whole bank (solar has been weak lately) and various check points show from that, the bank is close to 490AH, maybe 500, so that means the T-1275s are now near 270 and the 6s near 230. 270/300= 90%. This goes with that improved SG I got from the nursing I did with Equalize and Recondition.
All of which shows:
-alternating Equalize and Recondition does do some good, and
-used T-1275s if low cost, can be "worth it" if you happen to stumble across some. (otherwise, as new, they cost too much)
