Cordless SEBO vacuum runs but then suddenly stops and all lights go out, as if the battery was removed.

Safety first: Remove the battery and inspect it before further use.

• Check latch mechanism: Ensure the battery latch moves freely and fully engages. If it does not hold the battery securely, repair or replace the latch.
• Inspect contacts: Look for burn marks or pitting on the battery and vacuum contacts. Clean lightly with a dry cloth; replace components if heavily damaged.
• Test with gentle tapping: With the vacuum running, gently tap the handle. If it cuts out, the battery connection is intermittent and the battery or housing should be replaced.
• Replace worn parts: Install a new battery pack or battery bay/connector assembly if the connection cannot be made reliable.