The Canon NB-8L Rechargeable Lithium-ion Battery is suitable for the Canon Powershot A3000 IS and A3100 IS digital cameras. Lithium ion technology so there is no memory effect which means you can recharge it at any point without having to discharge it first.

Canon NB-7L Battery Pack - 3153B001/ Compatible With Powershot G10 Digital Camera/ Can Shoot Up To Approximately 400 Shots With The LCD Screen On/ Can Shoot Up To Approximately 1,000 Shots With The LCD Screen Off

The high-capacity Canon NB-6L Rechargeable Lithium-Ion Battery works with select Canon PowerShot Digital Elph digital cameras. It features lithium technology, which ensures maximum battery life and maximum power. It also features no Memory effect that lets you recharge partially drained Batteries without reducing performance.

The NB-4L is a rechargeable Lithium-ion battery for Canon PowerShot models SD200 and SD300. It's made to withstand approximately 300 recharges. When shooting with the LCD monitor off, you can expect approximately 400 images when fully charged, or 140 images when shooting with the LCD monitor on under normal environmental and shooting conditions. Similarly, the battery offers about 180 minutes of image playback time.

The high-capacity Canon NB-5L rechargeable lithium-ion battery for the Canon PowerShot SD series IS Digital Elph digital cameras features lithium technology, which ensures maximum battery life and maximum power. Using the NB-5L battery, the SD series IS Camera can take up to 240 shots per charge. It also features no memory effect that lets you recharge partially drained batteries without reducing performance.