You keep money in the bank - now keep power in the bank too. Enercell's Portable Power Bank is a small, personal-portable power supply that keeps you talking for up to four hours. It charges quickly from any USB power port.
Output voltage 5.0 /- 0.25V, output current 1000mA (max), with a capacity of 1350mAh
Battery average run time up to 4 hours, results vary by device and usage patterns
Over-voltage, over-current, short-circuit, over-temperature (charging)