Is a Swollen Battery Covered Under the Three Guarantees?

[McCayden]

It is covered under the Three Guarantees, and you can request a battery replacement. Introduction to Car Batteries: A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. Typically, the term 'battery' refers to a lead-acid battery, which is mainly made of lead and its oxides, with a sulfuric acid solution as the electrolyte. Battery Maintenance: Avoid parking the car in an open-air parking lot for extended periods. If the car is to be parked for a long time, the battery should be removed and taken away to prevent it from freezing and getting damaged. Car batteries need to be charged regularly. If left unused for a long time, the battery will gradually discharge on its own until it becomes unusable. Therefore, the car should be started periodically to charge the battery. Avoid using car electrical appliances after the engine is turned off. Using the battery alone when the engine is not generating power can cause damage to it.

[LeAna]

I once encountered a swollen battery. It happened just one year after buying the new car, and I was really anxious. I immediately took it to the 4S store for inspection, and they found it was due to an internal battery defect. They replaced it with a new one for free. Whether a swollen battery is covered by the warranty depends on the cause. The warranty policy covers product quality issues. If the swelling is caused by the battery's own defects during the warranty period, such as electrolyte leakage or manufacturing problems, it must be repaired or replaced for free. However, if it's due to frequent overcharging, high-temperature environments, or improper use causing damage, it's not covered by the warranty. It's best to take the car to the store for inspection immediately and get a diagnostic report before discussing compensation. For regular maintenance, avoid leaving the battery charging for too long, especially during hot summer days. Keeping it well-ventilated can reduce risks. A swollen battery is prone to overheating and catching fire, so safety first—don't tamper with it.

[LeCollin]

Last time, my friend's car battery also bulged, and he went to seek an explanation within less than half a year of purchase. After inspection, the 4S store claimed it was caused by a charging system malfunction and not a quality issue, so he had to pay for the replacement himself. Whether a bulging battery is covered under the three-guarantee policy depends on the specific cause: if it's due to an internal defect during the new car warranty period, the three-guarantee regulations require free repair or replacement; however, human factors such as frequent use of fast charging or unstable voltage causing overcharging will exempt liability. It's recommended to first check the purchase date and usage habits, keep the invoice, and seek an appraisal from an authorized car shop to avoid delays affecting the warranty period. Battery maintenance is crucial—controlling charging duration and reducing charging frequency in hot weather can prevent bulging. Mishandling this issue may also lead to electrolyte leakage, corroding engine compartment components and increasing additional repair costs.