Laresar Reduced Runtime / Battery Capacity Loss

Robot vacuum runs for a very short time (e.g., 5–10 minutes) and then returns to dock or shuts off.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Battery cells aged, Battery not fully charging, High drag from dirty brushes, Charging contacts corroded

Safety: Do not open the battery pack itself.

Clean drivetrain: Reduce load by cleaning main and side brushes, wheels, and filters.
Check charging: Ensure the robot sits correctly on the dock and the charging indicator is on. Clean contacts if needed.
Full charge cycle: Allow the robot to charge for at least 5 hours, then run a full cleaning cycle.
If runtime remains short: Replace the battery pack with a compatible Laresar battery.

Medium 3/5

Laresar Robot Vacuum Battery Pack

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