Energizer 20,000mAh 3.0 Amp PVC Lithium Polymer Power Bank for Smartphones and Laptops, with USB and 19VDC Output

Energizer XP20000 packs a whopping 20,000mAh in a unit that weighs only 1.1 lbs and measures a mere 6.5". Keep it handy in your car or in your backpack for charging larger, non-USB items on the go via its 19V DC output. It also has 2 USB ports for keeping the power going on smartphones, tablets, and even laptops, something which ordinary power banks won't do. Up to 3 devices can be charged simutaneously, and special technology is incorporated to guard against short circuits, overcharging, and temperature spikes.