BiXPower MAC220 Super Capacity 223 Wh (60300mAh) Rechargeable Battery Pack Super high capacity, long run time, external universal battery pack with MagSafe compatible and MagSafe2 compatible connector for Apple Macbook / Macbook Air and Macbook Pro computers. Made with high quality Panasonic Li-ion battery cells. Compact size can easily fit into a laptop/notebook carry bag. It may add extra 10 ~ 30 hours running time. Comes with 1 Output Power Cable, 1 MagSafe Compatible connector tip & 1 MagSafe2 Compatible connector tip. User selectable ouptut voltages. 15V output voltage is compatible with Macbook computers that need 14V ~ 16.5V power. 19V output voltage is compatible with Macbook computers that require 18V ~21V DC power. Comes with AC charger and Car charger. AC charger can charge the battery from 100V ~ 240V AC power outlets from home & office. Car charger can charge the battery from a car cigarette lighter socket. Can accept wide range input charging voltage ( 12V ~ 19V). Travel by air: Please contact with your airlines to check whether this 223 Watt-hour capacity lithium ion rechargeable battery is allowed to be carried on airplane before traveling with this battery pack.