this is a mini blower that is made to be used with a dewalt 20v battery and basic components found on alibaba all together cost around 30$ to manufacture. could be easily changed to work with other battery brands. https://www.aliexpress.com/item/1005005467723472.html?spm=a2g0o.order_list.order_list_main.29.46141802LvIHJ8 , https://www.aliexpress.com/item/1005008847766401.html?spm=a2g0o.order_list.order_list_main.23.46141802LvIHJ8 , https://www.aliexpress.com/item/1005006891368446.html?spm=a2g0o.order_list.order_list_main.10.46141802LvIHJ8