Fix Dead Lipo Battery. If a balance lead is pulled out or separated you can repair it with solder so long as there is still some solder remaining on the aluminum foil tabs. You may stop holding the batteryconstantly feeling it at this time and place the LiPo in a fireproof container or LiPo-safe charge bag at this point if desired.

You will use a voltmeter here to read and take the charging reading of your dead and healthy battery. Fully discharge a laptop battery. A dead LiPo battery.
You dont need it for now.
The business should replace it and should not ask for you to return it though. One dead cell in 3S LiPo was successfully revived using non-LiPo variable current charger at 110C for 10 hours. Cell termperature stayed within warm range. After a minute or two your battery should recover to.
