Solar Panel: 26,800 mAh/5V, Charged by solar energy from direct sunlight
Lithium Battery: 40,000mAh capacity lithium polymer battery
Output: DC 2.1A Max/5V
Input: DC 1000mAh/5V
USB Charging Time 4 to 6 hours
Solar Panel Charging Time: 20+ hours
Can be charged by sunlight and also via included USB chord overnight