Do Power Banks Damage Phone Batteries? Here’s What You Really Need to Know If you’ve ever plugged your phone into a power bank and wondered whether you’re slowly damaging the battery, you’re not alone. A lot of people worry about this. Maybe a friend told you that power banks reduce battery life. Maybe you saw someone online claim that charging your phone with a power bank is bad for the battery. After hearing these things repeatedly, it is easy to start wondering if there is any truth behind them. The short answer? For most people, the answer is no. A…