Tzumi Pocket Juice 20000 mAh PORTABLE CHARGER / POWER BANK with USB cord

Tzumi Pocket Juice 20000 mAh PORTABLE CHARGER / POWER BANK with USB cord is convenient to take with you when you rhink you'll need an extra power source but no outlet is handy. Don't miss a picture or video clip because you ran out of power. "If a battery has a battery capacity rating of 2000mAH, it can supply 2000 milliamperes of current during its lifetime. This means it can supply 20mA for 100 hours, 200mA for 10 hours, 2A for 1 hour, etc."