This Lithium Ion Replacement Battery for the Sony NP-FV70 Battery Charger will provide great peace of mind for photographers accustomed to doing long shoots. It has a capacity of 1750mAh and 7.4V of output power. The replacement battery is quick charging with optional AC-VQV10 AC Adaptor/Charger. Small and lightweight, compact and durable, lithium-ion batteries can be charged or discharged at any time without developing memory effects.