Legionâ„¢ Gen2 Premium 11,000mAh by PLX Devices USA Dual Gold USB 4.0 Amp Output, 2.5 Amp Input External Backup Battery AITechâ„¢ with Artificial Intelligence Lithium Monitoring System and Integrated OLED Display. Designed for For iPhone 4s 5s 5c 5, iPad Air Mini, Galaxy S5 S4, Tab 2, Note 3 2, LG G3, Nexus, HTC One M8, MOTO X, PS Vita, GoPro and More (Black)

Overview: Legion 11,000mAh is a premium dual USB, 4.0 Amp output, 2.5 Amp input fast charge external backup battery for USB powered devices. Legion employs an Artificial Intelligence Lithium Monitoring System with an integrated OLED display, computer processor, and graphics processor. "Legion's smart, innovative design makes it the iPhone of battery packs," says MacLife Magazine

Artificial Intelligence: Legion's integrated computer processor monitors the lithium batteries' voltage, current, temperature and learns how you use your devices to give you ultra accurate battery metering.

Power: Legion uses premium grade electronics to deliver unsurpassed power performance. The 4A combined dual USB output operates up to 97% efficiency giving you're the ability to tab as much energy as possible from the lithium batteries. Legion's charge input is capable of accepting up to 2.5A of charge current giving you the ability to charge Legion in as little as 4.4 hours. Power is supplied through the premium gold plated USB connectors for anti-corrosion and electrical conductivity.

Energy: Legion uses premium grade lithium polymer cells with guaranteed capacity, each individually tested, to meet or exceed 11,000mAh when new from the factory. Each lithium battery incorporates low voltage cutoff and high temperature cutoff circuitry safety.

Plug and Play: Legion is operated with a single button interface. Press and hold to turn Legion on-off. Press and release to toggle through the display menus. Legion automatically sleeps after 5 seconds of inactivity and goes into a low power standby mode after 1 hour of charge in/out inactivity. To charge Legion, plug it into any USB power source with the included micro USB cable. Legion automatically wakes to indicate that it is charging and learns the time remaining until Legion becomes fully charged.