Using your Bosch GHH12V-203XLN12 heated hoodie kit is a breeze. First, make sure the battery is fully charged using the included charger. Then, insert the battery into the power adapter. Connect the adapter to the hoodie. You can select one of the three temperature settings according to how cold it is. For light cold, choose the lowest setting; for extreme cold, go for the highest. When you're not using the hoodie, take out the battery and adapter. The hoodie is safe to wash in the washer and dryer, but always check the care instructions. Keep the battery in a cool, dry place and avoid overcharging it. And that's it! Enjoy your warm and comfortable Bosch heated hoodie.