Before using a power bank, please read the following information. Note that Nintendo does not guarantee operation with these devices.
Please ensure you have updated your console and that you are using the latest system version.
If the power bank uses a Type-A USB port (a Standard-A receptacle), use the USB charging cable (HAC-010) included with the Joy-Con Charging Grip and Nintendo Switch Pro Controller when connecting it to your console.
When using a third-party USB cable, ensure it has a 56 kilo-ohm resistor.
Using an unsuitable cable may result in your console receiving insufficient power from the power bank, and in some cases the device itself may be damaged. Regardless of the cable used, Nintendo does not guarantee the proper operation of portable battery chargers for charging your console.