Battery charges but the indicator never reaches full, or stays on one bar.

Safety: Use only the original charger.

• Extended charge: Leave the battery on the charger for several hours beyond the normal time to ensure it reaches full.
• Runtime test: If runtime is normal despite the indicator, the issue may be only with the LED gauge.
• Compare with another battery: If a second battery charges and indicates correctly, the first battery's gauge is faulty.
• Resolution: Replace the battery pack if indication remains inaccurate or runtime is reduced.