The Rock Solid high capacity external 10,000mAh, rechargeable, USB battery pack has enough power to charge USB compatible devices such as the Case Relay Camera Power System, TetherBoost Pro USB 3.0 Core Controller, tablets, phones or other USB devices.
The right port (5V, 2.1A) can power/charge a Case Relay, TetherBoost, an iPad, or a tablet and the left port (5V, 1A) can be used for other portable devices including CamRanger, iPhones, iPods, Android Devices, PSP, SmartPhones, and many other USB devices. The Rock Solid External Battery Pack will provide up to 50 hours of power to an iPhone 6 and 20 hours to an iPad Air 2.
The battery pack contains a rechargeable lithium-polymer battery, and an internal microchip controlling the voltage according to the device needing to be charged. So no matter which port you select it will never damage the device.
When the battery pack becomes depleted, recharge it the same way you charge any phone or tablet. Its small size and high-power capacity makes this device ideal for supporting your equipment on long photo or video shoots and during extensive travel.