Sorry to bump an old thread, but I've been looking for a battery charger and these cheap Chinese ones on the market seem quite attractive with their features (eg. temperature compensated charging and the pulse repair). They all seem to have similar functionality, which leads me to believe they all probably have some common circuitry in terms of the electronics. Curious to see what people's experience has been on the repair feature as the online reviews seem generally positive on them being able to desulfate batteries?
On a side note, I've been experimenting with refreshing some older batteries which are still functional but a little low on the tested CCA reading. I've done things like adding Epsom salts to the acid to increase conductivity, and also overcharging @ 16V overnight to break up some of the sulfates. Strangely, what has seemed to work the best in combination with these techniques is to do a deep discharge to <50% then immediately charge it up again. I think it maybe it "shocks" the plates a bit to help loosen up some of the sulfate build up.
On a side note, I've been experimenting with refreshing some older batteries which are still functional but a little low on the tested CCA reading. I've done things like adding Epsom salts to the acid to increase conductivity, and also overcharging @ 16V overnight to break up some of the sulfates. Strangely, what has seemed to work the best in combination with these techniques is to do a deep discharge to <50% then immediately charge it up again. I think it maybe it "shocks" the plates a bit to help loosen up some of the sulfate build up.
