Accessory Power Revive Series AC/DC Dual Camera Battery Charger for Sony NP-FM50, NPFM50, NP-FM70, NPFM70, NP-FM500H, NPFM500H - Works for Sony SLT-A99, SLT-A57, DSLR-A350 & Many More Dual Battery Charger allows you to charge two batteries at the same time quickly and efficiently Status LED Display for Real Time Charging Progress shows when battery is at 25%, 50%, 75%, and 100% capacity When a full charge is received, the auto-cutoff features enables trickle-charging to prevent damage to your battery Utilizes MPC Technology for Fast and Smart Charging Charges either 1 or 2 Batteries! Additional interchangeable charging plates for other battery types are also available