I used rubber bands and have the battery set up so the charge side is on the bottom so I can just slip the charger on when needed. Seems charging is needed pretty often, I charged it then used it the next day, put it in my box and a week later took it to the field again, it wouldn't roll over any engines. It's fully charged again but I have the ground lead removed from the battery to see if it will hold the charge while in storage longer.