NoMEM Li-Ion is the newest frontier in battery technology for power-hungry digital and high performance LCD type camcorders requiring a specially designed Lithium-Ion battery pack. It has the longest performance with no memory effect, highest quality Japanese made, original manufacturer approved protective circuit and it is 100% compatible with original equipment chargers.This battery replaces the Sony NP-F330 / 530 / 550 / 730 / 750 / 930 / 950 / 960 batteries and is designed for Sony camcorders.