What are BYD's lifetime battery replacement policies?

[McLeila]

BYD's lifetime battery replacement policies are as follows: The warranty period for core components of BYD's new energy vehicles is 8 years or 150,000 kilometers, while the power battery cells come with a lifetime warranty. When the battery's power degrades by 20%, you can apply for a free replacement. Relevant information about automotive batteries is as follows: 1. Introduction: An automotive 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 composed of lead and its oxides, with a sulfuric acid solution as the electrolyte. 2. Working Principle: It uses lead plates filled with sponge-like lead as the negative electrode, lead plates filled with lead dioxide as the positive electrode, and a 22-28% dilute sulfuric acid solution as the electrolyte. During charging, electrical energy is converted into chemical energy, and during discharging, chemical energy is converted back into electrical energy.

[VanEmery]

I've been driving my BYD Han for almost two years now, and the lifetime battery warranty was indeed a major factor in my purchase decision. This policy only applies to the first owner, with an annual mileage limit of 30,000 kilometers, and maintenance must be performed at official 4S shops. If battery capacity degradation exceeds 30% upon inspection, you can get a free replacement. However, it's important to note that battery damage caused by accidents or personal modifications isn't covered. During my last maintenance visit, the technician reminded me to keep all service records as they're required for warranty claims. Honestly, under normal usage, it's rare to see such significant degradation within seven or eight years, but having this policy provides great peace of mind, especially since the battery accounts for 40% of the vehicle's total cost.

[MelanieAnn]

As a practitioner frequently involved in NEV maintenance, there are several key points about BYD's battery lifetime warranty policy: It applies only to non-commercial vehicles' first owners, offering free replacement if capacity degradation caused by cell quality issues exceeds 20%-30%. Notably, users must consistently use authorized service centers for maintenance, otherwise warranty rights may be affected. The policy covers most mainstream models like Qin PLUS and Tang DM, but commercial vehicles and second-hand owners only qualify for an 8-year warranty. In practical use, LFP batteries exhibit slower degradation rates under normal temperature conditions, making this policy primarily a brand quality commitment.

[StPeyton]

Last month, I just picked up my BYD Dolphin, and the salesperson explained the battery lifetime warranty terms in detail: it's only available to the first owner and for non-commercial use, with an annual mileage not exceeding 30,000 kilometers. The focus is on protecting the battery cells, and if the remaining capacity drops below 70%, you can apply for a replacement. However, all maintenance must be done at authorized 4S shops. Once, my friend opted for a cheaper tire replacement outside, which could potentially affect the warranty rights. Battery inspection requires complete maintenance records, so I keep every service receipt. Although daily commuting is unlikely to trigger a replacement, having the coverage gives peace of mind.

[LaCaden]

Our family chose the BYD Yuan PLUS for daily commuting, and what we value most is its battery policy: the lifetime warranty is only applicable to the first owner, provided the vehicle is used for non-commercial purposes and the mileage does not exceed the limit. The core of the policy is to guarantee the battery cells, offering free replacement when the capacity falls below 70%. A key condition is that all maintenance must be performed at official service centers. For example, my neighbor opted for cheaper brake pad replacement at an external shop last year, and later the 4S store mentioned it might affect the battery warranty rights. The specific degradation standards may vary slightly between different models, so it's best to check the latest policy in the app when purchasing the car. If you frequently use fast charging, it's recommended to regularly conduct battery health checks.