Robot starts but shuts off after a few minutes of cleaning, even though the battery was fully charged.

Safety first: Turn off the robot before handling the battery.

Confirm behavior:

• Fully charge the robot on the dock until it indicates 100% in the app or via LEDs.
• Start a cleaning cycle and time how long it runs before shutting off.

If runtime is significantly shorter than specified (e.g., less than 20–30 minutes):

• Remove the battery and inspect for swelling or damage. Do not puncture or crush the pack.
• Replace the battery with an original or high-quality compatible Tesvor battery of the same voltage and capacity.

If a new battery does not improve runtime: The charging circuit or battery sensing on the main board may be faulty, misreporting charge level. Professional diagnosis and possible main board replacement are required.