K&F NP-FZ100 Battery Charger Set for Sony Alpha A7 III, A7R III (A7R3), A9, a6600, a7R IV, Alpha a9 II (2-Pack, Micro USB Port, 2280mAH* Backup Battery KitJust a few hours to use Micro USB or Type C 5V 2. 1A input port to charge two batteries at the same time; output voltage: 8. 4V; 7. 4V 2280mAh rechargeable lithium ion battery, using high quality batteries, can extend battery life, no memory effect; Note: Charging efficiency needs to be determined by the actual input current and voltage. Ship to US,IE,LT,LU,DE,EL,HU,LV,IT,CN,UK,NL,PL,PT,RO,SI,SK,SE,ES,FR,FI,EE,DK,CZ,BG,BE,AT,AU,GR