Zoll AED Pro 8000-0860-01 12V 4.2Ah LiMnO2SpecificationBattery Type: Lithium Manganese Oxide (LiMnO2) Voltage: 12V Capacity: 4.2Ah P/N: 8000-0860-01 Fit Model: Zoll AED Pro Manuf: Zoll Medical Corp.