Does BYD still offer battery warranty after vehicle transfer?
3 Answers
Second-hand BYD vehicles' batteries are eligible for the lifetime warranty. However, the battery will not be covered under the lifetime warranty policy if it sustains abnormal damage, which refers to damage caused by human factors. The battery mainly consists of the casing, power management system, cooling system, and battery cells. The primary function of the battery is to store energy. However, the power management system, cooling system, and casing are also crucial. Without these systems, the battery cannot function properly. Within the six-year warranty period, BYD will replace all the aforementioned components free of charge. Over prolonged use, the battery's capacity will gradually decrease as the number of charge and discharge cycles increases. Given the high cost of replacing new energy vehicle batteries, the ability to replace the battery for free is particularly important. To meet consumer demands, BYD offers a lifetime battery warranty policy. BYD's warranty policy is exceptionally favorable, and when the power battery's capacity degrades by 20%, it can generally qualify for a free replacement.
I just bought a used BYD Tang last month, and I specifically inquired about the battery warranty during the transfer process. The 4S店 technician said that as long as the vehicle is still within the basic warranty period of 8 years or 150,000 kilometers, the free battery repair service remains valid. However, you need to bring the new owner's ID and vehicle license to an authorized dealership to complete the owner information change registration, so that the system can update the warranty records. For used car transactions, it's best to check the vehicle's manufacturing date to estimate the remaining warranty period. You can also ask the original owner to provide a 4S店 inspection report on the battery condition—when I bought the car, I had the seller show me a battery health inspection report from within the last six months. After the transfer, it's essential to pay more attention to the maintenance of the electric vehicle, and regular battery checks are highly recommended.
As a professional handling new energy vehicle transfer procedures, I have overseen the handover of hundreds of used BYD vehicles. The basic battery cell warranty remains valid after transfer, typically 8 years or 160,000 kilometers depending on the model. There are three key steps: first, verify if the initial registration date falls within the warranty period; second, bring the green book and transfer invoice to a 4S store within 30 days to update the owner system; finally, keep all maintenance receipts. It's important to note that the warranty for the motor controller in the three-electric system may be shortened, but the battery warranty remains unchanged. New owners are advised to schedule a comprehensive inspection within the first month.
