Portable Charger Qi Wireless Power Bank 10000mah with Dual USB Output (2.1A & 1A), Mobile Charger for Cell Phone or Tabs: iPhone, iPad, Samsung, Nexus Contains a built-in 3.75V, 10000mAh lithium-polymer battery with the industry-leading charging efficiency of 72% Power bank contains a Qi wireless charging pad. Has 2 USB output ports with automatic detection of optimal charging speed for Android devices or iPhones at up to 2.1A. Intelligent protections against overcharge, overheat, or short circuit. LED indication displaying how much battery is left. This portable charger is covered with high end leatherette paint finish that prevents any possible fingerprints showing up on the device.