NB-5L Battery Pack
Product # CA1135B001

For the following Canon models:

PowerShot SD700 IS
PowerShot SD790 IS
PowerShot SD800 IS
PowerShot SD850 IS
PowerShot SD870 IS
PowerShot SD880 IS
PowerShot SD890 IS
PowerShot SD900
PowerShot SD950 IS
PowerShot SD990 IS