It is recommended to perform this procedure annually to ensure optimal performance:
Full cycle: Discharge the unit to automatic shutdown (0%) under suitable ambient temperature, then recharge it to 100% using the original charger. This helps calibrate the battery management system (BMS) state-of-charge estimation.
Port inspection: Check all input and output ports for looseness, foreign objects, or signs of oxidation.
Housing and thermal management: Inspect the enclosure for deformation or cracks; clean dust from ventilation openings.
Functional testing: Verify normal operation of each USB port, AC outlet, and car charger port.
Self-discharge monitoring: After fully charging, power off the unit and leave it idle for one week; record the percentage of capacity loss. If self-discharge exceeds 5% over one week, contact customer support for assistance.
How to perform an annual deep health check on a power supply?
