How Many mAh Do You Need in a Power Bank?
Choosing a power bank by capacity seems simple: more milliamp-hours should mean more charging. Technically, it is not that simple. A 10,000mAh portable charger does not deliver 10,000mAh directly into your phone battery. A 20,000mAh model does not necessarily recharge a 5,000mAh smartphone four times. And a high-capacity battery pack may still be a poor…
