Can a 3000 m Ah power bank charge a 3000 m Ah phone Gary explains

Read full article: , Buy a power bank for your phone: If you have a device like the Samsung Galaxy S7, which has a 3, 000 mAh battery, how much capacity do you need in an external battery pack 3, 000 mAh, right Wrong Let me explain. Download the AndroidAuthority App: Subscribe to our YouTube channel: