SOLAR OPTIMIZED - High quality, high temperature Li-ion cells tested and optimized for solar applications CAPACITY - 19,200mAh / 71 watt hours provides 4 charges to smart phones, 1.7 charges to 7" tablets, 1 charge to 10" tablets. Designed for use with Voltaic solar chargers, solar panels, and accessories POWER OUTPUTS - 5V/2A , 3A max (2 outputs), MicroUSB Input: 5-6V/2A, USB-C (Input Only): 5V/2A ALWAYS ON FEATURE - Voltaic's upgraded "Always On" feature makes it easy and efficient to use the V75 battery with various sensor or time lapse applications (see below) SAFE FOR AIR TRAVEL - Carry-on Luggage Only