Hybrid versatility has never been this portable and potent, delivering ample energy from a tiny size. Collects and stores power from vehicle, boat, computer or solar panel, then transfers it to personal electronic devices as needed. Power storage capacity: 2,200 mAh Output: mini-USB Features: Water resistant Durable rubberized shell Internal rechargeable Lithium Polymer battery Power gauge and auto shut-off Solar panel: 100 mA polycrystalline Battery storage: 2,200 mAh battery Output: 1,000 mA / 5V (USB 2.0 compatible) Dimensions: 5.5"x3"x.75", Compatible with Brunton Sync Tech™ enabled headlamps and task lights