External battery pack recharges up to 1,000 times from Solar or USB power - PLEASE NOTE: On first use, charge it up 100% by USB, then drain fully so that the Lithium-polymer battery chemicals can be exercised and broken in. * SOLAR CHARGING TIME: 13 hours in direct sunlight - high-efficiency 300mA ; USB CHARGING TIME: 4 - 6 hours * 4000mAh battery is ideal for giving mulitple charges to virtually all smartphones and most MP3 players and E-readers. It also gives partial charges to tablets such as iPad, e-readers, and other USB charging devices ; The XL pack charges your device at a MAX rate of 2.1 amps * Package includes USB charging cable for Solar Restore XL, window suction mounts, metal carabiner, and a solar panel extender (for future upgrade); Additional features include a 36-hour on-board LED light with FLASHLIGHT and EMERGENCY settings and a LED capacity indicator * 3 YEAR WARRANTY - Quality Guaranteed ; Dimensions - 6.7 x 3.6 x 0.8 inches ; Weight - 8 ounces