Introducing the NITECORE USN4 Pro Dual-Slot USB Travel Charger that is specifically designed to recharge Sony NP-FZ100 camera batteries. With a dual port design, the USN4 Pro simultaneously charges two batteries so you can spend less time charging and more time snapping photos. QuickCharge 2.0 USB input enables max charging speeds up to 1.2A in a single slot. In only 4 hours this charger can completely charge 2 batteries!