Please recommend Power Bank for LattePanda V1

Power bank with 5V2A not working but it working with 5V2A charger.

I want to know which output power is required for Power Bank.

Windows is unable to load with power bank output 5V2A.

Please recommend Power Bank for LattePanda V1 will be great.

As per https://docs.lattepanda.com/content/alpha_edition/powering/#recommended-power-banks
The standard power source is 3A @ 12 volts. The booting power is about 10 watts and operating power is about 5 watts with a limited electrical load.