To operate the XGIMI Elfin Flip with the Ugreen Powerbank 20000 mAh, 100 W, 72 Wh, you must ensure that the powerbank supplies enough power. The Elfin Flip consumes about 65 W. The power bank should therefore be able to operate the projector.

The runtime depends on the capacity of the power bank and the energy consumption of the projector. A power bank with 72 Wh could operate the projector for about 1 hour, as 72 Wh / 65 W is ≈ 1.1 hours. However, this is a rough estimate and may vary depending on actual consumption.