Designed exclusively for DMW-BLJ31 Battery Pack, this high-speed DMW-BTC14 Battery Charger is connected via USB adapter and is compatible with the USB Power Delivery specification. It delivers a full charge in about 2 hours. The three-stage LED charge indicator (50, 80, 100%) helps you manage battery usage. This is an authorized battery charger is officially approved for Panasonic LUMIX S Series cameras. | Panasonic DMW-BTC14 Battery Charger for LUMIX S1/S1R Cameras in Black