DUAL-ion+ ReVIVE Series Rapid NP-FW50 AC and DC Battery Charger for Sony Alpha NEX 7 / 5N / 5 / C3 / 3 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