We are proud to introduce a lightweight external power source for all of our guys who use bottle warmers and accessories that require an external power source. We know that batteries in cars are becoming smaller and smaller with less reserve so many are using other forms of external power sources. This is an easy way to top off you bottle with warmth with a small dock that can be mounted in the car or carried with you. The best thing is some of you may already own power tools so there will be no need for buying extra chargers and batteries.We are now offering Milwaukee and Dewalt and we will also have Kobalt versions to follow.