Milliamp-hours stands for electric charge the battery can provide, higher mAh means higher capacity. In most cases,u003cstrongu003e mAh in the power bank represents the internal battery capacityu003c/strongu003e. It does not equal the actual output capacity. There always will be energy lost due to voltage conversion and additional energy consumption. u003cbru003eu003cbru003eFor example, a 10,000mAh power bank may only carry 6500mAh actual output capacity.