Not happy with the fire rate that the 6v NiCD Battery gives you when your M4 terminator? This upgrade will help you increase your fire rate without worrying about stripping gears in your M4 Terminator. It also fits into the stock battery holder that came with your blaster.
 
The connectors are JST so they will fit the stock connector. Just make sure you connect the batter terminals using the right polarity.
 
NOTE - These batteries DO NOT come with a Lipo charger. These are NOT compatible with the stock NiCd recharger.