Battery indicator shows full, but the vacuum stops suddenly under heavy load (e.g., thick carpet).

Safety first: Remove the battery before inspection.

• Clean filters and bin: Reduce load by cleaning all filters and emptying the dust bin.
• Check contacts: Ensure the battery terminals and vacuum contacts are clean and tight.
• Test on hard floor: Run the vacuum on a hard surface. If it still shuts off quickly, the battery cannot sustain load.
• Replace battery: Install a new genuine Sencor battery pack to restore runtime and load handling.