Display shows BAT or a blinking empty battery icon; vacuum stops shortly after starting.

Safety first: Stop using the vacuum when BAT appears to avoid over‑discharging the battery.

• Fully recharge: Place the vacuum on the charger until the indicator shows full. Do not interrupt the charge.
• Use appropriate power mode: For regular cleaning, use normal or eco mode instead of turbo to extend runtime.
• Warm to room temperature: If the vacuum was stored in a cold area, allow the battery to warm to room temperature before use and charging.
• Assess battery age: If the vacuum is several years old and runtime is very short even after full charge, plan to replace the battery pack.