Unable to Check Battery Level on M30U

Published at: 2026-05-22

Battery indicator and power-off check

Potential Causes

  • Battery level is being checked while the device is powered on.
  • Battery level is being checked while the device is in standby mode.
  • The Level button is not being used correctly.

Troubleshooting Steps

  1. Power off the device first
    Battery level can only be checked when the M30U is powered off.
  2. Short-press the Level button
    When the device is off, short-press the Level button to view the remaining battery.
  3. Understand the battery indicator
    Each indicator bar represents about 20% battery:
    1. 1 bar = about 20%
    2. 2 bars = about 40%
    3. 3 bars = about 60%
    4. 4 bars = about 80%
    5. 5 bars = about 100%
  4. Charge the device if the indicator flashes
    If the level indicator flashes, the battery is low. Please charge the device before use.

Details

It is normal that the battery level cannot be checked while the device is powered on or in standby mode. Please power off the device first, then short-press the Level button.

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