from my previous experiance w/ gp's is that they hold up fairly well. I just got some GP3300's last week from a buddy that was selling out. They were the epic Monster Metal cells, 2 packs matched by lightspeed. This guy has been out of r/c for about 3 years (these cells are old). For shits and gigles, I cycled them and they ended up holding 3400-3500mah! (I even charged them at 6 amps (delta peak was at 5 a cell!!!!!!). Voltage was about 8.3 after sitting for about 1/2 hour after it peaked. I was shocked!!! Good #'s for its day