GENUINE SONY NP-BK1 K TYPE BATTERY FOR SONY CYBER SHOT CAMERAS NEW SEALED 887988844259 | eBay
Amazon.com : Synergy Digital SDNPBK1 Lithium-Ion Battery - Rechargeable Ultra High Capacity (3.7V 1100 mAh) - Replacement for Sony NP-BK1 Battery : Digital Camera Batteries : Electronics
Sony NP-BK1 Type K Rechargeable Li-Ion Battery
Power Smart for Sony NP-BK1 and Sony Cyber-Shot DSC-S750, DSC-S780, Camera Battery - Power Smart : Flipkart.com
Amazon.com : Kastar Battery (2-Pack) for Sony NP-BK1, BC-CSK Work with Sony Bloggie MHS-CM5, MHS-PM5, Cyber-Shot DSC-S750, DSC-S780, DSC-S950, DSC-S980, DSC-W180, DSC-W190, DSC-W370, Webbie MHS-PM1 Cameras : Electronics