Energizer CNP20 Lithium Ion Digital Camera Battery (Casio NP20) These are a perfect replacement to the Casio NP20 original battery.  They have a charge capacity of 710mAh and are fully compatible with Casio'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 CNP20 Features:

• 3.7V
• 710mAh
• Replaces:Casio NP20

Please note: picture may vary from the actual product