Đế Pin Milwaukee M12

Here is an M12 battery foot to attach to your smaller m12 batteries.  This will help them from tipping over when you set them down.  

to attach the battery simply use a few strips of electrical tape and push it the base.  This will create a nice and snug friction fit.  If you dare try super glue or hot glue for something more perinate.  Do this at your own risk.