Battery indicator shows full, but vacuum stops after a few seconds of use

Safety first: Remove the battery before cleaning contacts. Do not short the terminals.

• Clean contacts: Use a dry cloth or isopropyl alcohol on a cotton swab to clean the metal contacts on both the battery and vacuum.
• Charge fully: Place the battery on the Bosch charger until fully charged. Ensure the charger does not show an error.
• Test on low power: Use the vacuum on the lowest power setting and time the runtime. If it still stops within a minute, the battery is likely failing.
• Try another battery: If possible, test with a different compatible Bosch battery. If the problem disappears, replace the original pack.
• Replace battery: Do not continue using a pack that collapses under load; replace it with a genuine Bosch battery.