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I need a spare battery of this camera, how much cost ? cost ?
Hi, Just search online for Sony NP-BN1 battery and take your pick.
As the Sony Cyber-shot DSC-W510 is now 7 years old, personally, I would opt for an aftermarket battery on Ebay that can be found for $10.- $15. An original Sony battery will most likely cost more than the current dollar value of the camera.