The high-capacity Casio
NP-20 rechargeable Lithium-Ion battery works for Casio Exilim EX-M1, EX-M2,
EX-M20U, EX-S1, EX-S2, EX-S3, EX-S20U, EX-Z3 and EX-Z4U 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.