SONY BC-TRG Charger & NP-BG1 / NP-FG-1 Battery 2-Pack used with Sony CyberShot DSC-220 / DSC-W290 / DSC-H20 and More Digital Cameras Battery Charger replaces Original SONY BCTRG Charger for NPBG1 / NPFG1 Battery; 110V -220 Volt (with flip down plug) for International & Domestic usage Battery Specifications : Chemistry: Lithium Ion ; Voltage 3.6V (volts) ; Capacity 950MAH Smart Circuit Technology; Automatic charging cut-off. Smart charging senses battery level. 2 way micro-chip communication. 3 Year Manufacturer's Warranty ; European Quality with Silicon Valley Technology; Customer Satisfaction Guaranteed