This GP power bank Travo Safe 4H03 is a must-have for providing backup power for your smartphone, tablet, etc. quickly and safely when you're on the go. The charger features ReCyko+ NiMH battery technology with a low self-discharge. It has a capacity of 3800 mAh which equals about 1.5 full smartphone charges, and has an output current of 1.5 A. The power bank itself takes about 5 hours to charge and features a 2-colour charging indicator.