Robot mower shows E16 and stops; may occur when the mower is lifted near the charging base.

Safety first: Disconnect the power supply from mains and turn OFF the mower before touching charging contacts.

Steps to check:

• Inspect for debris: Look for wet grass, mud, or metal objects (e.g., wire, staples) between the charging contacts on both mower and base. Remove and dry thoroughly.
• Check for corrosion: Clean any green/white corrosion from contacts with a fine abrasive pad and dry cloth.
• Inspect springs: Ensure the mower's contact pins move freely and are not bent together.
• Drying: If the mower or base has been exposed to heavy rain, allow them to dry indoors for 24 hours before reconnecting power.

When to call a technician: If E16 persists with clean, dry contacts, the internal charging circuit or base PCB may be shorted and should be replaced.