Vacuum shows E15; battery indicator flashes abnormally and runtime is extremely short (a few minutes or less).

Safety first: Remove the battery before inspection. Do not puncture or open the battery pack.

• 1. Fully charge battery: Place the battery on the LG charger until the indicator shows full. This may take several hours.
• 2. Test runtime: Use the vacuum on Normal mode and time how long it runs from full to shutdown. Compare to the expected runtime in the user manual.
• 3. Try a second battery: If available, test with another LG battery. If runtime is normal with the second battery, the original battery is worn out.
• 4. Replace the battery pack: Purchase a genuine LG replacement battery compatible with your model. Install according to the manual.
• 5. To extend new battery life: Avoid storing the vacuum in very hot areas and do not leave the battery fully discharged for long periods.