Battery adapter that allows you to use a Makita 18V battery instead of the Milwaukee 18V lithium battery system. The adapter makes the Makita battery compatible with Universal lights and the battery compressor (product codes 240068, 240069 and 240050). A convenient and cost-saving solution when you want to use your current batteries without needing to buy Milwaukee batteries separately. The adapter adds flexibility and makes tool use smoother on job sites and at home.