Brunton Heavy Metal 5500 Power Pack AC/USB Charging Device Brunton Product Includes battery Great for camping 5X SMART PHONE CHARGES LITHIUM POLYMER ENERGY - High-grade Lithium polymer cells charge faster and last longer; no memory and minimal discharge; 1000 cycles at 80% capacity CHARGE TIME - USB - 6 hours, AC/USB - 6 hours, SOLARIS 4 (not included) USB - 7 to 8 hours Dual Charge output; Twin USB Outputs, Charge Multiple Devices Simultaneously Planet Safe Power/High-Yield Lithium Cells Keep Wasteful Alkaline Batteries on Shelves and Out of Landfills