If its a 3 cell, the voltage will be 9 to 12.6v. If its a 2 cell voltage will be 6 to 8.4v. There is no overlap so a lipo capable charger, charging in lipo mode will not let you make a mistake. If you try as a 3cell and its really a 2cell, charger should give you an error.

The other way that tells you this is a 2S is the balanmce wires - there are only 3 wires, a 3S would have four wires. This is a 2S !!!!



Looks like the lable is wrong, lipo say 7.4v which is a 2cell. Unless your DVM/MM tells you otherwise, I'd try charging as a 2cell. Def a screw up with the label!