This high output 9.6v battery uses 2000Mah 4/5A cells which perform better during high drain than other size nunchuck batteries. The Elite cells are a high-output cell which keep a solid amp output during their entire discharge cycle.
Nickel Metal Hydride cells, or NiMH, do not require discharging before recharging. They also provide much higher capacity for a similar size than a comparable NiCD.
The nun-chuck battery is designed to fit in airsoft M4s, including Classic Army and KWA, and will also fit in many PEQ battery boxes, as well as in other airsoft guns.
We recommend getting the AC-DC Universal Smart Charger for NiMh or NiCd Airsoft Batteries for optimal performace from the battery.