Cordless Vax vacuum’s battery indicator LEDs behave erratically (e.g., jumping from full to empty) without consistent runtime.

Safety first: Monitor the vacuum during use and avoid running the battery to complete shutdown repeatedly.

• 1. Perform a calibration cycle:
  • Fully charge the battery until the charger indicates full.
  • Use the vacuum on normal mode until it stops by itself.
  • Allow the battery to cool, then fully recharge without interruption.
• 2. Observe LED behaviour: After calibration, check if the indicator is more accurate.

If the indicator remains erratic and runtime is also poor, replace the battery pack.