Cordless vacuum battery indicator shows full but runtime is inconsistent

Safety first: Use the vacuum in a safe area while performing calibration, as it may stop unexpectedly.

• Step 1 – Full charge: Charge the vacuum until the indicator shows full, then leave it on the charger for 1–2 hours.
• Step 2 – Full discharge: Run the vacuum continuously on normal mode until it stops by itself.
• Step 3 – Repeat once: Perform one more full charge and discharge cycle to help recalibrate the gauge.
• Step 4 – Evaluate: If the indicator remains inaccurate or runtime is still erratic, the battery pack may be aging or the gauge IC faulty. Replace the battery pack.