Answer
Mar 18, 2026 - 03:49 PM
A 20,000mAh power bank typically has a total energy capacity of around 74Wh (watt-hours). Depending on the MacBook Pro model and its battery size (for example, a 14-inch MacBook Pro has a battery of about 70Wh), the power bank can charge it approximately once from 0% to 100%. However, due to energy loss during conversion, the actual number of full charges will be slightly less than one.
