Charge on the go with Eye to Eye's portable charger! The battery features a 15 lithium-ionium ion grade A non-recycled battery and is UL listed (UL File # MH60964, Model # UL1500P). The red LED indicator light shows when it's charging, and you can plug in via USB output or micro-USB input (cord included). This is great for most phones and mp3 players. The output is 5 volts / 1 amp and you need the cable from your device in order to power up.