10,000 mAh power banks

Use a power bank with 10,000mAh capacity to fully charge your smartphone 1 to 2 times. By converting voltage and energy loss during charging, a 10,000mAh power bank has an actual capacity of approximately 6,600mAh. Compare that to the capacity of your smartphone to calculate how often you fully charge your device. Choose a power bank with Quick Charge or Power Delivery to charge your smartphone extra quickly. Almost all power banks have multiple USB connectors. This allows you to charge your smartphone and your smartwatch or e-reader at the same time. Not all 10,000mAh power banks are the same size. Go for a compact, easy to carry power bank if size is important.