MPOW 25W/5A 4-Port Ultra Portable Multiple USB Wall Charger Travel Power Adapter with Xsmart Technology Smart Technology makes each port intelligently identify the charging control chips of any connected device and speak its unique charging language to make fastest possible speed charging . Up to 5 amps among 4 ports or 2.4 amps per port. Ultra Portable(flip down Plug Designed), compact (2.6 x 2.1 x 1.1in) and light (4.4oz), great for use on the go or traveling. 100-240 volt input is ideal for international travel. User friendly designed: Plug and play, no LEDs to add distractions. UL certification and premium circuit design with over-heated, over-current, over-charging protection. Charging will be automatically stop when battery is full.