Amazon.com : Wasabi Power Battery for Canon NB-5L and Canon PowerShot S100, S110, SD700 IS, SD790 IS, SD800 IS, SD850 IS, SD870 IS, SD880 IS, SD890 IS, SD900 IS, SD950 IS, SD970
Amazon.com: Newmowa NB-5L Replacement Battery (2-Pack) and Portable Micro USB Charger Kit for Canon NB-5L and Canon PowerShot S100, S110, SD790IS, SD850IS, SD870IS, SD880IS, SD890IS, SD970IS, SX200IS, SX210IS : Electronics