Game & Watch: Super Mario Bros. can be charged with the following method:
If you would like to use the included USB charging cable (model No. HAC-010) with a standard household charging block, please use a USB-compatible AC adapter.
Note: While some USB-compatible devices may be able to supply power to Game & Watch: Super Mario Bros., Nintendo cannot recommend any particular device. Please make sure to follow the instructions of any third-party device.
It takes approximately 3 hours to charge the device.
When fully charged, Game & Watch: Super Mario Bros. can provide approximately 8 hours of play time. However, this may vary depending on play style, brightness, and volume levels.
When you first connect the device to charge, the battery level and charging icon will be momentarily displayed on the top right corner of the screen.
You can also view the remaining battery charge by pressing the PAUSE/SET Button while in game or clock mode.
Complete these steps
Connect the included USB charging cable to the USB-C connector on the right side of the device, then to a USB-compatible AC adapter (sold separately).
2. Connect the USB-compatible AC adapter (sold separately) to a wall outlet.