The Tenergy Lite3000 3000mah Power Bank is a must-have device! Provides backup power for your USB charged devices. Also includes a convenient built-in LED flashlight. Power your cellphone, or other devices with this backup battery supply. Charge your iPhone 1.5 times directly from this device. Great for airsoft fields in the woods, camping, or using when you won't be near a power source. Fully charges in 3 hours from a USB connection.