Cordless vacuum’s battery indicator LEDs are inaccurate, dropping suddenly from high to empty.

Safety first: Remove the battery before any physical inspection.

• 1. Perform calibration cycle: Fully charge the battery until the charger indicates complete. Then run the vacuum on normal mode until it stops by itself. Recharge fully again without interruption.
• 2. Repeat if needed: One or two full cycles can help the battery management system recalibrate its capacity estimate.
• 3. Monitor behaviour: If the indicator remains erratic and runtime is also poor, the battery may be degraded and require replacement.
• 4. Avoid constant topping up: Occasionally allow the battery to discharge to the low-battery warning before recharging to maintain calibration.