Vacuum runtime is much shorter than specified, but the battery indicator still shows charge remaining.

Safety first: Remove the battery before cleaning contacts.

• 1. Deep charge: Fully charge the battery until the charger indicates completion.
• 2. Full discharge test: Use the vacuum continuously on standard mode until it stops. Allow the battery to rest for 30 minutes, then fully recharge. This can help recalibrate the fuel gauge.
• 3. Clean contacts: Wipe the battery and handle contacts with a dry cloth to ensure a low-resistance connection.

If runtime remains significantly reduced, replace the Swan Cordless Vacuum Battery Pack.