To avoid an empty Battery after a period of non using your C1 you should have this upgrade.

Install a normal female connector with a cover which is used in cars to provide 12V power and connect it to the Battery You can see everything at the pictures, but be aware of the following:

The cable should have min 1mm²

The power cable must have a fuse with max 10A

If you did so, you can now use an electronic Battery Charger to keep your battery allways alive.

Questions ?  e-mail me