Wasabi Power Battery and Charger for Sony NP-FW50 (2 Wasabi + 2 Top Brand & 1 Charger) Rechargeable lithium-ion battery for Sony W Series NP-FW50 Rated at 7.2V and 1300mAh for longer battery life Premium Japanese cells for longer battery life with no memory effect Fully compatible with the Sony camera and charger All Wasabi items include and 3-year manufacturer warranty