The built-in intelligent safety system ensures complete protection for you and your devices, including over-heat, over-charge, over-current, over-discharge and short-circuit protection. 100% safe to use as it will stopping working automatically after fullly charge your mobile or recharge the power bank. The battery pack has been upgraded with 20W PD. When you are in an emergency, the power bank can juice up for a phone from 0% to 50% within 30 minutes.


