Item Description IFR14500 Battery Brand: PKCELL Model: IFR14500 3.2V 600mAh Battery Capacity: 600mAh Volt: 3.2V Chemical Composition: LiFePO4 Size: Diameter 14.5±0.2mm X Height 50±0.5mm Weight:18g/pc Internal impedance: (23±2°C) ≤60mΩ (Operation temperature) (Discharge)------------------- -20-70°C (Charge)----------------------- 0-70°C Application:Solar Lights ,Flashlights ,Yard Light ,PS3 Move Controllers, Torch ,Outdoor LED Lamps ,Solar Landscape Lighting, X-Lite Transmitter,Motion Lights IFR18500 Battery Brand: PKCELL Model: IFR18500 3.2V 1200mAh Battery Capacity:1200mAh Volt: 3.2V Chemical Composition: LiFePO4 Weight: 35g Size: Diameter 18±0.2mm X Height 50±0.5mm Internal impedance: (23±2°C) ≤60mΩ (Operation temperature) (Discharge)------------------- -20-70°C (Charge)----------------------- 0-70°C Application: Solar Lights,Solar Floodlight,Solar Spotlights,Walkway Lighting,Outdoor Lights,Flashlights,Solar Outdoor Lamps Package Included:(Depend on your choice)