Duralite Receiver 1500mAh 2S 7.4V Lithium-Manganese Redundant Battery Pack with built-in Balancing Safety Circuitry and (2) Leads with Universal Connector. Features: - Stay Balance circuit built into pack - Non flammable if punctured or overcharged - Longer life cycles than Li-poly - High charge rates up to 10C - 20/40C Cont/Max Discharge More Information (links): * Instruction Manual

Specifications:
Dimensions: 4" x 1 1/4" x 7/8" (100mm x 30mm x 20mm)
Weight: 3.8 oz. (110g)
Voltage/Capacity: 7.4V/1500mAh
Configuration: 2 cells in Series

Always use with Voltage Regulator!!!!
Charge only with Li-Polymer Charger!!!!