Crave PowerPack CRVPP101 50000 mAh,Dual USB and Dual Laptop Ports Ultra-High Density Portable Power Bank WHAT DOES IT WORK WITH?: Compatible with most Laptops & Notebooks (Make sure your laptop charger draws under 5 Amps, Auto Shutoff above 5 amps) Please check your adapter size and compatibility PRIOR to purchase if unsure. COMPACT & PORTABLE: Our external battery charger is not only powerful, it fits conveniently in your bag, suitcase or purse. Tightly packaged under 3 pounds, you can take it wherever you go and never run out of power. You never have to stop for an outlet again! When your smartphone, tablet or laptop start losing charge, just pull your Crave PowerPack battery charger out of your bag and recharge it in no time. BLAZING CHARGE TIME: At 50000mah, you can charge your devices to full capacity quickly and efficiently. Not only that, but each fully-charged Crave PowerPack power bank can charge your smartphone from 0-100% battery power up to 15 times! LAPTOP COMPATIBILITY: Acer, Asus, Compaq, Dell, Fujitsu, HP, IBM, Lenovo, NEC, Samsung, Sony, Toshiba (Apple Laptops draw &gt; 5 Amps, not supported) PORT COMPATIBILITY: 1 20V/3 Amp Port for Laptops, 1 12v/2.5 Amp Port for Camera a misc, 2 5v/2.1 Amp USB Ports For Tablets & 2 5v/1.0 Amp Ports for SmartPhones and misc.