Review on KONNWEI KW510 12V 5-Amp Smart Charger with Car Battery Tester - 3 in 1 Automotive Pulse Repair Maintainer, Trickle Charger Battery Desulfator with Temperature Compensation by Bruce Willam

Bought to repair a car battery. It's really easy to use, just make sure you follow the instructions completely. Be sure to remove the battery from the vehicle before using the repair function! Before you remove your car battery, make sure you have a good memory saver. I bought one from Revain where you can wire it to the wall as the repair process can take a long time. It worked for me after the battery was disconnected for over 11 hours. When removing a car battery, first remove the negative terminal and then the positive terminal. Make sure the cables do not touch each other or any part of the vehicle. Wrap the connections in towels to prevent short circuits. When you put the battery back in the car, make sure you put the positive terminal first and then the negative terminal. The repair process takes a long time but seems to work very well. I look forward to using this again in the future if I run into any problems.