The Caisi NP FZ100 lithium-Ion battery pack is the perfect power source for select Sony cameras. Has a battery capacity of 2250mAh and voltage of 7.2v . The battery pack is rechargeable, allowing for multiple usage. The battery can hold its charge well and does not suffer from memory effect. Moreover, Lithium- Ion batteries offer the best energy to weight ratios of any battery technologies, ensuring that the batteries remain small and lightweight.