Amazon.com : Synergy Digital Camera Battery, Compatible with Canon PowerShot SX510 HS Digital Camera, (li-ion, 3.7V, 1200 mAh) Ultra High Capacity, Replacement for Canon NB-6L Battery : Electronics
Amazon.com: Kastar Battery (2-Pack) and Charger Kit for NB-6L, CB-2LY and Canon PowerShot D20, S90, S95, S120, SD980 IS, SD1300 IS, SD4000 IS, SX170 IS, SX260 HS, SX280 HS, SX510 HS, SX600
NB-6L Battery or charger for Canon PowerShot SX280 HS, SX500 IS, SX510 SX520 HS | eBay