How long is the warranty period? How to solve the problem of capacity degradation exceeding the commitment during the warranty period?

‌In the energy storage battery industry, warranty period is one of the core issues that customers are concerned about. The current mainstream enterprise warranty period is concentrated at 8-10 years, and some top brands can extend it to 12 years for specific scenarios. The warranty period is closely related to parameters such as battery cell type, cycle times, and usage scenarios.

The industry generally adopts "capacity retention rate" as the quality assurance standard. Taking a certain brand's 280Ah battery cell as an example, its warranty clause promises that the battery capacity degradation will not exceed 20% of the initial capacity within 6000 cycles or a 10-year warranty period. This means that when the actual capacity is below 224Ah, the user can initiate the warranty program.

After confirming that the capacity attenuation exceeds the standard, legitimate manufacturers usually provide a three-level solution: prioritize BMS system calibration and balanced maintenance; If it is a battery cell quality issue, replace the faulty module; For situations that cannot be repaired, most companies promise to convert the compensation amount according to the attenuation ratio or provide replacement services. Attention should be paid to providing complete charging and discharging records and proof of usage environment for the warranty to take effect.