Gomadic Portable External Battery Charging Kit suitable for the Canon Powershot SD300 Includes Wall; Car and USB Charge Options
Kastar AC Wall Battery Charger Replacement for Canon Digital IXUS 130, Digital 40, Digital 50, PowerShot SD30, PowerShot SD40, PowerShot SD200, PowerShot SD300, PowerShot SD400 Camera - Walmart.com
Canon PowerShot SD300 Digital ELPH/Digital IXUS 40 Review: Digital Photography Review
Canon NB-4L Camera battery New DRC4L Canon PowerShot SD300 SD400 SD430 SD450 etc | eBay
Kastar 2-Pack Battery and AC Wall Charger Replacement for Canon Digital IXUS 130, Digital 40, Digital 50, PowerShot SD30, PowerShot SD40, PowerShot SD200, PowerShot SD300, PowerShot SD400 Camera - Walmart.com
Amazon.com : Kastar Compatible Battery 1 Pack and Charger Replacement for Canon PowerShot SD300 SD450 and Canon NB-4L NB4L : Digital Camera Battery Chargers : Electronics