The Nitecore USN4 PRO is the compact digital USB charger for Sony Camera batteries NP-FZ100, α7 III, α7R III, α9 ILCE-9. The ability to power the USN4 PRO charger via USB connection makes it a perfect companion for mobile and on-the-go use. The USN4 PRO fast charger has two charging slots and can ideally charge 1-2 pieces of the Sony Camera battery type NP-FZ100. The LCD display shows a lot of information about the charging process: Battery voltage, charging current, temperature, charging progress and also the battery status. In Quick Charge mode, the USN4 PRO can charge with max. 1.2 A on one charging slot and with 2 x 0.8 A on two charging slots. The standard charging current is 1A.