Voltaic Systems V44 Always On External Battery Pack with Dual USB Ports - 12,000mAh SOLAR OPTIMIZED - High quality, high temperature Li-Polymer cells tested and optimized for solar applications. CAPACITY - 12,000mAh / 44 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 - 1 USB (5V 2.1A) and 1 USB (5V/1A) outputs. PACKAGE INCLUDES - The Voltaic V44 battery, 1 microUSB output cable, and 1 cable to charge V44 from any USB port. ALWAYS ON FEATURE - Voltaic's selectable "Always On" feature makes it easy and efficient to use the V44 battery with various sensor or time lapse applications (see below). <span class="a-text-bold">Capacity</span>: 12,000mAh, 44Watt hours <span class="a-text-bold">Output</span>: 5V/2A and 5V/1A USB (2 Outputs) <span class="a-text-bold">Input</span>: 5-6V, 2A <span class="a-text-bold">DC Input</span>: 5.5 x 2.1 mm <span class="a-text-bold">Battery Type</span>: Li-Polymer Short circuit, over charge, over discharge, over current, over temperature 4.0 x 4.25 x0.75 inches 11 ounces