Safety first: Turn OFF the vacuum and remove the battery pack before inspecting contacts.

Step 1 – Inspect contacts: Examine the metal contacts on the battery and inside the battery bay. Look for bent pins, discoloration, or debris.
Step 2 – Clean contacts: Use a dry, lint-free cloth to gently wipe the contacts. If light oxidation is present, a pencil eraser can be used very gently on the battery contacts only. Do not use liquids or abrasive tools.
Step 3 – Check battery authenticity: Ensure you are using a genuine Essentials battery pack designed for your specific cordless vacuum model. Third-party packs may not communicate correctly.
Step 4 – Reseat and test: Reinstall the battery firmly until it locks. Power on the vacuum and check if E5 clears.
Step 5 – Main PCB inspection (advanced): If E5 persists with a known-good battery, the communication line on the main control board may be damaged. This typically requires replacement of the main PCB by a qualified technician.

Warning: Do not attempt to bend internal pins aggressively; they can snap and render the unit unusable.

Vacuum runs for only a few seconds and then stops with E5 on the display.

Possible Causes