Dboys M-51 DBAL Battery Box which also included a high output 1100mAh 10.8 Volt mini custom Ni-MH battery pack.  The battery box is more compact that most on the market, making it a great choice for all Airsoft guns, especially smaller ones where space might be an issue.  Battery box mounts to any standard Weaver or Picatinney rail.

Please note that everyone sells this as a 10.8 volt batteries but we have actually taken one of these apart and it very clearly only has 8 cells inside of it which is a 9.6 volt battery, NOT 10.8 volt. We just wanted to let people know before they order!