Built-in intelligent recognition voltage imported chip, can automatically identify the mobile phone, PSP, tablets, and other digital products charge. Precise electronic board, have prevent overcharge, discharge, prevent leakage, short circuit and high temperature resistant. High quality high capacity batteries, durable. Support for fast charging, no memory effect, charging circuit number up to 1000 times. Standard USB output, Micro/Mini USB input, simple and easy to carry. (COMPATIBLE FOR ALL USB CHARGING DEVICES)