Sony NP-BX1 Rechargeable Lithium-Ion Battery Pack (3.6V, 1240mAh)

The NP-BX1 Rechargeable Lithium-Ion Battery Pack from Sony is designed to replace the original NP-BX1 battery that arrives included with the Sony DSC-RX1 and DSC-RX100 digital cameras. It is certified to be compatible with the original Sony charger and camera. Smaller and lightweight, Lithium-ion batteries can be charged or discharged at any time without developing memory effects.

Compatibility
This Sony X-type battery is designed to be 100% compatible with the Sony DSC-RX1 and DSC-RX100 digital cameras
Premium Lithium-Ion Cell
The battery has a 1240 mAh capacity, with absolutely no memory effect so that you can charge it at anytime without worry 

Chemistry Lithium-ion
Capacity 1240 mAh
Battery Charge Time Not Specified by Manufacturer
Voltage 3.6 V
Watt Hours 4.5 Wh
Compatibility Sony DSC-RX1 & DSC-RX100
Dimensions Not Specified by Manufacturer
Weight Not Specified by Manufacturer