Using the GamePi20 add - ons is easy. First, make sure you have a Raspberry Pi Zero / Zero W / Zero WH and a micro SD card as they are not included. Then, assemble the add - ons according to the instructions. The console is powered by a 14500 lithium battery, so insert the battery carefully and start enjoying your games. You can adjust the volume and backlight to make your gaming experience more comfortable. Remember to check the battery life indicator regularly to avoid sudden power - off. When it comes to maintenance, keep the console clean and dry. Avoid exposing it to extreme temperatures or moisture. If you have any questions during development, refer to the wiki at www.waveshare.com/wiki/GamePi20 for more information.