Support Required for 40 mAh Battery Configuration with nPM1300 EK and nRF54L15

Hello Nordic Team,

I am currently working with the nPM1300 EK together with the nRF54L15 platform and a custom 40 mAh Li-Po battery.

I am facing an issue while configuring battery charging and discharging parameters in nPM PowerUP v2.2.4. The tool currently provides a minimum battery capacity option of 400 mAh, and I am unable to configure or generate settings for a 40 mAh battery.

I would appreciate your guidance on the following points:

  1. How to create a valid battery profile .inc file for a 40 mAh Li-Po battery.
  2. Recommended charger configuration values for:
    1. Charge current
    2. Termination current
    3. Cutoff voltage
  3. Whether it is possible to use the fuel gauge functionality without the dedicated nPM Fuel Gauge Board.
    Recommended approach for performing charge/discharge testing and SOC estimation using only:
    1. nPM1300 EK
    2. nRF54L15
    3. 40 mAh battery
  4. Any available examples or documentation for low-capacity batteries (<100 mAh) with nPM1300.

Current setup:

  • nPM1300 EK
  • nRF54L15
  • 40 mAh Li-Po battery
  • NCS SDK v3.2.0
  • nPM PowerUP v2.2.4

At the moment, I do not have the nPM Fuel Gauge Board available, so I would also like to understand the limitations and supported workflow without it.

Thank you for your support.

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