Yesterday, I scored 26 FREE big-a$$ UPS batteries that a cable company was discarding.
Here's the tally after a session with the voltmeter:
22 Good batteries, all over 12v :-D
1 @ 11.6v, easy fix ;-)
1 @ 4.2v, might save it (very likely)
2 @ 0.05v, might be totally shot? IDK for sure... ???
Overall, a Great Haul!
:-D
Pushing the 4.2v battery on a standard charger, but the 11.6v battery is getting the "Spa Treatment" with the R-Charge radiant charging unit. It uses High Voltage DC spikes to "condition" and "rejuvenate" the cells. It eliminates sulfation and makes the lead plates more porous and spongey, which allows a greater ampacity. They also tend to charge quicker as they become "rejuvenated" and can hold up to 25% greater ampacity, and ergo, run times. A 100AH battery taking up to 44 hours to charge with this method actually means I need a bigger unit. Stop It, Dirty Minds! LOL!!! I mean that I need a more powerful Radiant Charging Unit, so I can do many of these batteries at once. But they get rather EXPENSIVE! I might get a twin unit that is rated at 4 times the output, but that will have to wait. I can build one, but automatic cut off would be the problem. Hate to waste a whole batch of batteries because the charger did not shut off! Here's a pic of my R-Charge unit:
https://tse1.mm.bing.net/th?id=OIP.dPrk1JSG-yVqdnC98R27nAEsC7&pid=15.1
Image Credit: bedinimotors.blogspot.com
Actual Unit sold at r-charge.net by Rick Friedrich