BargainCell

• Sony DCR-DVD610 / DCR-DVD710 / DCR-DVD810 / DCR-HC52 / DCR-HC54 / DCR-HC62 / DCR-SR220 / DCR-SR220D
• Sony HDR-SR5 / HDR-SR7 / HDR-SR8 / HDR-SR10 / HDR-SR10D / HDR-SR11 / HDR-SR12 / HDR-SR45 / HDR-SR46
• Sony HDR-SR65 / HDR-SR85 / HDR-SR220 / HDR-CX12 / HDR-CX7 / HDR-HC5 / HDR-HC9 / HDR-TG1 / HDR-UX20
• Sony HDRCX100, HDR-CX100B, HDR-CX100R, DCR-SR47, DCR-SR47R, DCR-SR47L, DCR-SR67, DCR-SR87
• Sony DCR-DVD850, DCR-DVD650, DCR-SR60, DCR-SR41, DCR-SR41L, DCR-SR41R
• Sony DCR-SR40, DCR-SR40L, DCR-SR40R, HDR-TG5V
• Sony CyberShot DSC-HX1
• Sony DSLR A230, A330, A380

Compatible with Battery:

• Sony InfoLithium NP-FH30 / NP-FH50 / NP-FH-60 / NP-FH70 / NP-FH90 / NP-FH100

• Length: 4.7 Feet

Other feature on this item:

• Fully Plug & Play compatible
• Compliant with USB 2.0 Full-Speed (12Mbps) specification
• Compliant with USB Device Class Definition for Printing Devices Version 1.0
• Compliant with IEEE 1284-1994 specification for Bi-directional Parallel Peripheral Interface
• Support Bus-Powered mode, no external power source required
• No Driver is needed for Windows 2000 / XP / Vista or above
• Connector: USB Type A Male to 25-Pin Female

This is a back up battery so when your regular phone battery starts to die you can plug this battery in to give you more battery power.

Other Possible Question for the same items:
Question : What does button from the Rechargeable Backup Battery Pack does?

Answer : That is just the indicator. When the light is red it means its charging and when its blue then it means that it is fully charged.