MAVLINKHUD
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Full Parameter PDF

Overview

The BTAG parameter group supports Smart Battery Tagging (NFC/RFID or SMBus). This system tracks the health and usage history of individual battery packs across multiple flights.

Unlike standard BATT parameters which configure the sensor, BTAG stores persistent data about the battery pack itself if the hardware supports retrieving a unique ID from the battery.

Key Concepts

1. Cycle Counting

The autopilot tracks charge/discharge cycles to estimate battery aging.

  • BTAG_CYCLE_MIN: Minimum discharge (mAh or %) required to count as a "cycle."

2. Usage History

  • BTAG_FIRST_USE: Timestamp of first flight.
  • BTAG_LAST_USE: Timestamp of most recent flight.

Parameter Breakdown

  • BTAG_CAPACITY: The factory capacity of the detected pack.

Developer Notes

  • Context: Requires specific hardware support (e.g., Tattu/GensAce Smart Batteries or custom NFC readers).

BTAG_CAPACITY

mAh
Default 3300

Battery Tag Capacity (BTAG_CAPACITY)

Description

This parameter is not found as BTAG_CAPACITY in the main codebase. It appears to be a miscategorized battery parameter.

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BTAG_CYCLE_MIN

Default 10

Battery Tag Cycle Min (BTAG_CYCLE_MIN)

Description

This parameter is not found as BTAG_CYCLE_MIN in the main codebase.

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BTAG_FIRST_USE

Default 0

Battery Tag First Use (BTAG_FIRST_USE)

Description

This parameter is not found as BTAG_FIRST_USE in the main codebase.

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BTAG_LAST_USE

Default 0

Battery Tag Last Use (BTAG_LAST_USE)

Description

This parameter is not found as BTAG_LAST_USE in the main codebase.

View Source
Integrated Radio Configuration (BRD_RADIO) Button Input Configuration (BTN)