Volts and mah are not the only thing to look for. Discharge rate (C) is important too. Just because it has 9.6v and 1600mah, if it has 5C discharge rate... it won't pull the gun over.
Just a heads up.
A 7.4v lipo at 1600mah and 20C can EASILY pull over a 400fps gun at 19 rounds per second for a full game day.
Ár skal rísa, sá er annars vill
fé eða fjör hafa. Sjaldan liggjandi úlfur
lær um getur né sofandi maður sigur.