Battery capacity describes how much energy a battery can store and deliver. It’s commonly shown in milliampere-hours (mAh), ampere-hours (Ah), or watt-hours (Wh), depending on the device and voltage. This converter helps you translate between these units - using a typical battery voltage where needed - so you can figure out if your power bank is allowed on your flight. To be safe, it's best not to bring power banks above 20,000mAh.
20,000 Milliampere-hours is equal to: