I just bought a stampede vxl for my son, the guy I got it from use a 3s lipo to run it off of. He hadnt played with it in 6 months and said the battery just needed charged and it was ready to go. I pluged it in and got " low voltage" on my charger. So I know the battery was not run in lipo cutoff mod. Is there any way to bring this battery back from the dead? thanks...don