Using the Bosch GHH12V-20LN12 Heated Hoodie Kit is a breeze. First, insert the 12V Max Lithium - Ion 2.0 Ah Battery into the provided slot. Then, connect the battery to the hoodie using the included GAA12V - 21 12V Max Portable Power Adapter. You can choose one of the three heat settings according to how warm you want to be. The hoodie can be worn alone on milder days or layered under other jackets in colder weather. When it comes to charging your mobile devices, just plug them into the power adapter using a USB cable. For cleaning, you can safely put the hoodie in the washer and dryer as it's machine - washable. However, make sure to remove the battery and power adapter before cleaning. Also, don't use harsh detergents or bleach. Store the battery in a cool, dry place when not in use, and charge it regularly to keep it in good condition. With proper care, your heated hoodie kit will serve you well for a long time.