BiXPower High Capacity (192 Wh or 52,000 mAh) Selectable Output Voltage (12V 15V 16V 18.5V 19.5V 20V 24V) Rechargeable Ltihium ion Battery - MP190DC This power pack comes with a BiXPower CP190 high capacity (192 Watt-Hour, or 52,000 mAh) light weight Lithium Ion battery with AC charger and a BiXPower DD90X Multi Voltages (12v/15v/16v/18.5v/19.5v/20v/24v) DC Power Adapter with 12 or more interchangeable connectors. Battery weight only 2.75 pounds. Compact size: 5.8 x 4.8 x 2.5 inches. BiXPower DD90X DC power converter can convert the CP190 battery output voltage to 12V/15V/16V/18.5V/19.5V/20V/24V power. The DD90X 90W DC power adapter can also provide 12V/15V/16V/18.5V/19.5V/20V/24V DC power from a 12V or 24V car/truck/boat cigarette lighter socket. DD90X DC power converter multi-output voltages plus interchangeable connector tips will make the battery work for many different laptop/netbook/tablet computers and other electronic devices. It also has a 5V USB port to supply a maximum of up to 2.1A current, which is enough to power and charge many tablets, such as iPads. Also. please note that lithium ion batteries are not allowed in checked-in languages when travel by air and this battery may be not allowed to carried on airplane neither. Please call your airline to make sure. Battery pack is a high capacity (192 Watt-hour, or 52,000 mAh) rechargeable Lithium ion battery with its own AC charger. 192 Watt-hours capacity is about 2 ~ 3 times capacity of a laptop internal battery. Battery can be charged from 100V ~ 240V AC power outlet with included AC charger. It can be used to charge the battery from the car cigarette socket with DD90X DC power adapter included.. Special Note: the DD90X DC to DC power adapter & connectors bundled with this battery are mainly for laptop / notebook computers or other devices that just require simple DC power like LED lights. Some devices with proprietary connectors may not work with battery pack even the voltage matches and connector looks same ( such as some new CPAP machines).