Plans: 1. Build the battery box. Status: About 90% complete. I needed a battery box to secure the battery in the fuselage. I will locate it on the back side of the firewall. I used the brake to fold up some .032 sheets into a box tailored to the battery. A top clamp was fashioned with some angle and bar. It is simple but took a while to sort the details. I also added some leather to the inside of the box to make for a snug fit.