BiXPower BP220 Super Capacity 223 Wh (60300mAh) 15V & 19V Rechargeable Battery Pack - UL/IEC 62133 Certificated. This battery may triple your computer running time. It may add 9 ~ 18 hours extra running time for most laptop/notebook computers and 20 ~ 30 hours extra running time for most ultra-books and tablets. This battery can work together with a device's internal batteries. Most laptop computers' internal battery capacity is around 50Wh to 75 Wh, but this battery capacity is 223 Watt-hour (Wh), or 60300mAh if rated like many other brand external batteries on market. Made with high quality Panasonic Li-ion battery cells. UL / IEC 62133 Certificated ( in Oct. 2016). Compact size can easily fit into a laptop/notebook carry bag. 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. Comes with an AC charger and a Car charger. AC charger can charge the battery from 100V ~ 240V AC power outlets. Car charger can charge the battery from a car cigarette lighter socket. 12 Interchangeable connector tips. Compatible with many devices that need 14V, 14.5V, 16V, 16.5V or 18V, 18.5V, 19V, 19.5V or 20V DC power. Works for most laptop notebook netbook tablet computers, such as Acer, Asus, Compaq, Dell, IBM, HP, Lenovo, Samsung, Sony, Toshiba laptop notebook computers and tablets, medical equipment and other electronic devices. 5V USB port provide power for iPad, cellular phone, MP3 player or other small electronics that can be charged from a 5V USB port. Two or more batteries can be connected daisy chain to provide longer running time with BiXPower Y25 split connector dongle . Details and Cautions about daisy chain 2 or more batteries are published on BiXPower Web site.