I have a hard case 2s lipo that has the open connection error. I'm thinking of cutting it open and see if it can be fix? Has any one opened a lipo battery?
I have like three lipo batteries that need to be rewired from the inside, I'll try an open the lipo and see if I can repair it.
If you can fix it I say go for it, but in my opinion you are better off buying a brand new battery. Check out the battery thread and read about what battery most people are buying.