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Bogert Aviation Concorde Battery Adapter Plates FAA/PMA

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Part# 11-02891
MFR Model# 08M-1-1-6


CB-35A and RG-35A batteries sit lower in the battery box than standard aviation batteries and the battery posts are closer to the edge. Bogert Aviation designed the Concorde Battery Adapter to raise the battery posts height to equal the post height of standard G-35 series batteries and moves the terminal inward from the edge to a safer distance.
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  • Manufactured with solid copper or brass
  • Sold in pairs and are reusable and transferable
  • Very simple installation
  • Many models approved, others pending approval
  • Made in the USA


  • Simplifies Battery installation - Raise and re-position the Concorde battery post to equal the original placement of the Standard Gill G-35 Series batteries.
  • Promotes safety Moves battery connection point inward to a safer distance from the edge of the box.
  • Improved Performance Greatly improved electrical connections when used with the Bogert Battery Box Modification for metal boxes. (Braided cables and straps are eliminated)
  • Minimize electrical shorts to the box by positioning the cable connections away from the battery box.


Works as advertised! It safely moved the terminal connections a little further inboard. A bit pricey for what they are but hey what isn’t. No complaints. Make sure everything is secured and torqued to spec’s

Matthew F Verified Purchase


February 10, 2022

Well made, easy to install.

Custom A
September 8, 2019


Please note,'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Will these work on the Concorde RG-25XC battery posts?

Per the supplier: Yes, PN: 11-02891 (08M-1-1-6) will work on RG-25XC.