Energizer CA2L Lithium Ion Digital Camera Battery (Canon NB2L) These are a perfect replacement to the Canon NB-2L original battery.  They have a charge capacity of 1000mAh and are fully compatible with Canon's original battery charger.They have Charge Control and short circuit protection unlike some of the cheaper batteries on the market so you can be sure your camera is safe.

Energizer CA2L Camera Battery Features:

• 3.7V
• 1000mAh
• Replaces Canon NB-2L