FlyPower 2 x 7.4V 2000mAh FW50 NP-FW50 Battery for Sony Alpha NEX-3 NEX-5 NEX3C NEX-F3 SLT-A37 NEX-5R It is high capacity rechargeable Li-ion battery with premium grade A cell. No memory loss effect,camera is not included,brand new Non-OEM item. Integrated microchip prevents overcharging & lengthens battery life. ISO 9001 certificated factory,CE and RohS certificated,tested with strict quality control standards. Free shipping and free return,this product has 12 months replacement warranty.