Masione 3.7V 800mAh Li-ion Rechargeable Battery for CASIO NP-20 Exilim EX-S100 EX-S500 EX-Z70 EX-Z3 EX-Z4U EX-Z60 Brand New | Li-ion | 3.7 Volts | 800 mAh | Black 100% Compatible with Casio NP-20 Batteries are made with the highest quality materials No memory effect so that you can charge battery at anytime 30 Days Money Back and 1 Year Warranty