The vacuum runs for only a few minutes on a full charge, then stops with a low battery indication.

Safety first: Handle the battery pack carefully. Do not open or puncture it.

Step-by-step:

• 1. Fully charge the battery: Charge the battery until the charger indicates full. Leave it on the charger for an extra 30–60 minutes to ensure cell balancing.
• 2. Time the run: Use the vacuum continuously in low power mode and measure the run time. Compare with the specification in your Henry cordless manual.
• 3. Repeat for confirmation: Perform a second full charge and discharge cycle to confirm the reduced capacity.
• 4. Try another battery (if available): If a second battery gives normal run time, the original pack is worn out.

Battery packs are consumable items. If capacity is significantly reduced, replace the Henry cordless battery pack with a genuine part of the correct voltage and capacity.