The consumer-grade wire harness and temperature sensor supplied with the BatteryMINDer® do not qualify for installation on FAA certified aircraft under FAA regulations 14 CFR §21.9. They suitable for and may be used for bench charging, but cannot be legally installed on the aircraft.
This kit provides standard aircraft parts acceptable under §21.9 for a FAA certificated mechanic to fabricate and attach a fused, 2-wire harness to a certified aircraft’s lead acid storage battery, for the purpose of connecting an aviation-specific BatteryMINDer® brand of low-current, continuous-duty, maintenance-type battery charger. The finished harness typically has ring
terminals at the battery connecting to a Anderson SB50 polarized plug at the opposite end by up to 6 feet of MIL-spec unshielded 16-gauge aircraft wire, with a 10-amp in-line fuse. An insulating dust cover protects the plug when not connected to the charger.
This kit can be installed as a minor alteration under 14 CFR §1.1 and §21.93(a) as it has “no appreciable effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness” of the aircraft. No Form 337
submittal or FSDO field approval is required per FAA Order 8900.1 Figure 4-67. A §43.9 airframe logbook entry is sufficient to document this alteration and return the aircraft to service.
This kit also includes a short harness to adapt the charger’s SAE output connector to a mating Anderson SB50 plug. This harness is connected to and remains with the charger. It is not installed on the aircraft.
Finally, the BatteryMINDer® At-the-Battery Sensor (ABS-248) should not be installed on FAA certified aircraft. Instead, temperature compensation is best accomplished by contacting VDC Electronics to obtain an ambient temperature sensor that plugs into the charger. Alternatively, the ABS-248 sensor and harness can be coiled up at the charger to sense ambient temperature.
Can I just use the connection harness that comes with the BatteryMINDer?
All aviation-specific BatteryMINDer models come with a battery clip harness that is suitable for bench charging and temporary connections. But to install a quick-connect battery harness on certified aircraft, you will need to fabricate it from aviation grade materials and have it installed by a licensed mechanic. The automotive ring-terminal harness that comes with general purpose BatteryMINDers cannot be legally installed on certified aircraft. Can I build my own quick-connect battery harness for full-time maintenance charging?
For experimental aircraft, the answer is yes. For certified aircraft, there are basically two requirements to be legal. The materials from which the harness is fabricated must be aviation grade, conforming to some recognized quality standard, such as military specifications. The installation on a certified aircraft also requires approval. So long as the installation remains within the FAA’s definition of a minor alteration, any licensed mechanic has the authority to fabricate, install, and approve the installation for return-to-service with a airframe maintenance logbook entry. Our Model BM-AIK2 provides a convenient kit of aviation parts from which your mechanic can easily fabricate, install and approve a charger connection. Do you have instructions for installing BatteryMINDer connection in my aircraft type?
The instructions that come with our BM-AIK Airframe Interface Kit are generic and will guide the installation on most any aircraft. (see the Documents tab) We also offer a growing list of illustrated installation examples that can be downloaded to show exactly how to install the kit on particular aircraft types.