Eliminates braided negative straps and ground connections for reduced heat and improved electrical performance
Includes adhesive templates and U-shaped flanges for easy, precise battery box modification
Compatible with Bogert low loss copper cable kits for seamless integration
Quick access battery removal and installation with sliding flanges
Includes FAA PMA-approved STC and all necessary paperwork for compliance
Summarized by Shop
The Battery Box Modification greatly improves battery performance. It modifies Piper Metal Battery Boxes to eliminate the braided straps and ground connections known for heat generating, high resistance connection.
Hard starting and other electrical problems can often be tracked back to poor battery and group connections. Use this inexpen
Compatible Aircraft
Piper PA-18, PA-20, PA-22, PA-23, PA-24, PA-25, PA-28, PA-30, and more
Certification
FAA PMA-approved STC SA4008NM
Included Components
Adhesive templates, U-shaped flanges with grommets, cover plate with rivets
Color
Black, Silver, White, Gold
Made in
USA
Summarized by Shop
4.9
8 ratings
5
4
3
2
1
Battery box mod.
It was simple and did the trick. Instructions were clear and concise. The parts I needed were included.
T
Timothy · June 29, 2025
Battery Box Mod STC SA4008NM Review
I am very satisfied with the battery box mod STC. the quality of the materials is good and the installation instructions are easy to follow. Big improvement over the stock battery connections.