Nature Power 55026 18-watt Folding Solar Panel with Portable Power Bank Elite 25 Li-Ion Rechargeable Battery Pack 18-Watt Folding Solar Panel for outdoor and on the road charging 25,000mAh Lithium rechargeable batter pack for long lasting and high capacity charging Two 2.1Amp USB charging ports; 1 1.0Amp USB charging port, AC outlet UL and cUL Approved