Custom battery

In BikeCAD version 20, we have several new frame mounted batteries we can add to our models. However, recognizing that it is impossible to include every battery in the program, we also now have the option to configure our own custom battery. To do this, we'll actually turn our focus away from the drivetrain dialog box and go to the water bottle dialog box where we have a new battery space claim option. As with water bottles, we locate the back bottom edge of the battery with respect to the first water bottle boss. We also specify the length and width of the battery. When the battery option is selected, no cage is applied, so the cage selection dialog box is ignored. The color used for water bottle caps is also applied to the battery.