Features:

• Safe chemistry will not explode or catch fire
• More mAh per gram compared to NiMH cells, meaning lighter models, and longer runtime
• Virtually no "self discharge", so the battery is always ready to go even weeks after charging.
• Superior voltage performance under load compared to NiMH cells, with consistent torque and speed.
• Fast charge time

Specifications:

• Voltage: 6.6V
• Capacity: 2100mah
• Chemistry: LiFePO4
• Balance Charge Plug: XH
• Charge Rate: 1C
• Compatibility: Futaba 3PV, 4PK, 4PM, 4PV, 4PLS, 4PX, 7PX, 10PX, 16SZ, and 18SZ
• Discharge Plug: JR/Futaba
• Dimension (LxWxH): 76x41x17mm
• Weight: 105g