Sometimes all you need is that last bit of energy to make that connection, make that call and make it all come together. So small that you won???t notice it until you really need it, the Brunton Pulse??? 1500 will keep you up and running through a long day on the road, or a late night on the town. High-grade Lithium polymer cells charge faster and last longer; no memory and minimal discharge; 1000 cycles at 80% capacity. Charge Time: USB - 1.5 hours; AC/USB - 1.5 hours; SOLARIS?? 4 USB - 2 to 3 hours. Power Storage: 1500 mAh, Output: USB & MicroUSB, Power Output: 1 AMP.