# Pixhawk4 Mini - Doesn't recognize battery

**URL:** <https://discuss.px4.io/t/pixhawk4-mini-doesnt-recognize-battery/25230>\
**Category:** PX4 Autopilot\
**Created:** [November 27, 2021, 8:09pm UTC](https://discuss.px4.io/t/pixhawk4-mini-doesnt-recognize-battery/25230 "2021-11-27T20:09:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![RobertV](https://discuss.px4.io/letter_avatar_proxy/v4/letter/r/d6d6ee/32.png) [@RobertV](https://discuss.px4.io/u/RobertV)\
**Post date:** [November 27, 2021, 8:09pm UTC](https://discuss.px4.io/t/pixhawk4-mini-doesnt-recognize-battery/25230/1 "2021-11-27T20:09:45Z")

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Hardware: Pixhawk4 Mini, Holybro PM02 Power Board, 3S Lipo to PB and ESC, 2S Lipo on Servo Rail w/5.1V regulator, Eflite Timber w/stock ESC, Spektrum Satellite RX

Issue: I set up the battery configuration in QGroundControl it never seems to recognize the battery connected to the PB. When I try to calibrate the ESC, it says “timeout waiting for a battery”. Also, when in the flight screen (connected to FC via USB), it says Battery “OK” but has no voltage or current measurements.

So I can’t calibrate the ESC and the aircraft never allows arming due to battery error.

Does anybody have any suggestions?

 ![image](https://discuss.px4.io/uploads/default/original/2X/b/b644c3f4926f7cc2a05bd6ffaacb798e93c378ff.jpeg)

 ![image](https://discuss.px4.io/uploads/default/original/2X/2/253e806a6996d5dfe06e6b6494a9a6729892725e.jpeg)

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**Author:** ![JaiGAY](https://discuss.px4.io/letter_avatar_proxy/v4/letter/j/d78d45/32.png) [@JaiGAY](https://discuss.px4.io/u/JaiGAY)\
**Post date:** [December 7, 2022, 4:10pm UTC](https://discuss.px4.io/t/pixhawk4-mini-doesnt-recognize-battery/25230/2 "2022-12-07T16:10:12Z")

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[Version 3.0 and version 3.1 hardware produced different results](https://discuss.ardupilot.org/t/holybro-power-module-pm02-v03-unable-to-get-current-readings-using-analog-pins-on-pi/81494/2) for the same settings and configurations.

3.1 totally cannot sense the ampere with the CubeOrange carrier board.

 ![Untitled](https://discuss.px4.io/uploads/default/original/2X/4/4210b4446751188bb3b8e39b9c3aa166a701173b.jpeg)