What is the battery replacement standard for BYD battery degradation?

3 Answers
StMalia
07/29/25 7:53pm
When the battery capacity falls below 66% of the standard capacity, a new battery replacement is directly required. Here are the relevant details: 1. BYD: BYD is a Chinese automotive brand established in 1995, primarily manufacturing commercial vehicles, passenger cars, and batteries. Starting with a team of just over 20 people, it grew into the world's second-largest rechargeable battery manufacturer by 2003. In the same year, BYD Auto was established, adhering to a development strategy of independent R&D, production, and branding, with the goal of creating truly affordable and high-quality vehicles for the general public. 2. Pure Electric Vehicles: Pure electric vehicles are powered by an onboard power source, using electric motors to drive the wheels, and comply with all road traffic and safety regulations. Due to their relatively lower environmental impact compared to traditional vehicles, their prospects are widely viewed as promising, though the current technology is still not fully mature.
Was this review help?
19
3
Share
OBrianna
08/14/25 3:37pm
I've been driving a BYD electric car for several years, and BYD has clear standards regarding battery degradation. Their official warranty typically covers 8 years or 150,000 kilometers, with free battery replacement if the capacity drops below 70%. You need to visit a 4S store for professional testing, using specialized equipment to measure battery health. In daily use, pay attention to reduced range—for example, if it used to run 400 kilometers but now only manages 280, it's time for a check-up. Don't wait until it's completely dead, as severe degradation affects driving safety and charging efficiency. It's recommended to perform battery maintenance every six months, including balanced charging to extend lifespan. If the warranty expires, battery replacement can be costly, but BYD services are transparent—they'll present a solution before you decide.
Was this review help?
3
2
Share
Expand All
McGavin
10/15/25 7:58am
As a long-term BYD user, I've found that battery degradation replacement mainly depends on the warranty terms. My car's battery degraded to 65% within the warranty period, and the 4S store replaced it for free. The standard is that you can apply when capacity falls below 70%, but it must be confirmed by official testing. Never make assumptions yourself - for example, reduced range could just be due to cold winter winds, not actual degradation. BYD's after-sales service is quite good, with the process taking about a week. Remember to keep maintenance records, as this can save trouble. After warranty expires, you'll have to pay out of pocket, which could cost tens of thousands, so pay attention to warranty details when buying. When driving an EV daily, avoid frequent full charges and complete discharges to reduce aging.
Was this review help?
19
4
Share
Expand All
More Forum Discussions

Is it normal for a car battery to fail after one and a half years?

It is not normal for a car battery to fail after one and a half years. If you usually neglect maintenance or use it incorrectly, its lifespan will definitely be reduced. Here are the correct methods for using a car battery: Charge frequently: The battery should be used and charged regularly to keep it in a saturated state, which will extend its service life. Do not wait until the battery is depleted before charging it, as this will shorten its lifespan by one-third. Also, avoid overcharging. If the charger is used for a long time, its components will inevitably age, leading to leakage. Prevent overcharging: Overcharging the battery generates a large amount of gas that erodes the plates, accelerating the shedding of active material from the plates and shortening the battery's lifespan. Overcharging also accelerates water loss, leading to the drying up of the electrolyte, an increase in battery temperature, thermal runaway, plate expansion, and casing deformation.
1
0
Share

Can You Shift from D to S Gear While Driving an Automatic Transmission Car?

You can shift from D to S gear while driving an automatic transmission car. The functions of D and S gears are basically the same. The D gear is the drive gear of the car. When this gear is engaged and the accelerator is pressed, the car can move forward normally, and the automatic transmission performs gear shifting operations. The S gear, on the other hand, is the sport mode. When this gear is engaged, the automatic transmission downshifts more aggressively, the power response becomes more intense, and driving becomes more exciting. Therefore, when the car is moving forward normally, most automatic transmission models can shift directly from D to S gear. The only difference is that the transmission will perform continuous downshifts. As long as the accelerator pedal is kept pressed, the ECU will generally perform the corresponding fuel compensation automatically. For cars with manual-automatic transmission, it is better to use D gear when driving on the highway because the car usually maintains a speed of 90-120 kilometers per hour on the highway. When traffic is not heavy, operations like overtaking, rapid acceleration, or sudden deceleration are rarely needed. In such cases, using D gear makes driving safer, smoother, and more fuel-efficient. As for the S gear, it is best used when overtaking. Since overtaking on the highway often requires higher speeds, engaging the S gear allows the car to achieve greater output torque, making the overtaking process shorter and safer.
12
5
Share

What is the general lifespan of an automobile motor?

Generally around 15 years, but a high-quality, well-maintained engine can last up to 20 years. A major overhaul is typically performed at 150,000 kilometers to extend its service life. For private vehicles that have been in use for 15 years, inspections are required every 6 months (twice a year) until they fail the inspection. Charging time: Generally, the larger the battery capacity, the longer the charging time. For example: A 12V48AH battery indicates a voltage of 12V and a capacity of 48AH. Using an external charger with a 4.8A current, it takes approximately 14 hours to fully charge. Charging method: While the car is running, the alternator replenishes the battery. However, when the battery is severely depleted, immediate recharging is necessary. The car's own charging capacity is insufficient in such cases, and a portable charger must be used. It takes about 20 hours to charge a car's starting battery.
15
2
Share

What Causes a Car to Have No Idle Speed?

Spark plugs that have not been maintained for a long time accumulate excessive surface contaminants, often due to not being replaced every 30,000 kilometers. If there is oil or carbon buildup in the car's throttle body, it is necessary to promptly visit a 4S shop or a repair shop to clean the throttle body. Specific Reasons: A blocked intake tract can cause idle speed fluctuations, while carbon deposits or oil in the throttle body are the most common causes of unstable idle speed. Carbon buildup in the throttle body affects its opening degree and the intake air volume, leading to erratic engine RPM fluctuations and strong vibrations when the car is started cold. Precautions: Severe oil or carbon buildup in the throttle body, including a dirty intake tract, can make it difficult to start the car in cold weather. A dirty throttle body requires cleaning, which is considered a routine maintenance task. Spark plugs can also accumulate carbon deposits, and cleaning can restore their activity. However, some spark plugs may experience performance degradation as they near the end of their lifespan. Weak sparks from individual spark plugs can affect the car's performance, and generally, faulty spark plugs may cause the car to exhibit "misfire" symptoms.
6
0
Share

Is There Any Issue with a Car Battery Stored for 10 Months?

There is no issue with a car battery stored for 10 months. Generally, the warranty period for car batteries after leaving the factory is 1 year or 20,000 kilometers. Definition of Car Battery: A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. A storage battery is an electrochemical device that stores chemical energy and releases electrical energy when needed. Lead-Acid Battery: The commonly referred to car battery is the lead-acid battery. It is primarily made of lead and its oxides, with a sulfuric acid solution as the electrolyte. Some batteries develop high internal resistance after prolonged use, appearing fully charged quickly but discharging rapidly. Such batteries may show normal no-load voltage when tested with a multimeter. Therefore, it's essential not only to measure the no-load voltage but also to test the discharge current, which can be done using a discharge tester.
20
3
Share

Does the Car Battery Need Replacement?

Batteries that fail inspection need replacement, while those that pass do not. Generally, a car battery can last at least 3 to 5 years before requiring replacement. Regular Battery Inspection: The vehicle's user manual provides clear maintenance recommendations for the battery. If the car is used frequently, the battery should be inspected every two years; if used infrequently, an annual inspection is sufficient. Batteries that fail inspection need replacement, while those that pass do not. Impact of Usage Habits on Battery Lifespan: If the battery is frequently in a low-charge state or if the vehicle's electrical system is equipped with high-power-consuming devices, the battery's lifespan will be shortened accordingly. The battery's longevity is also influenced by the driver's habits, such as frequently making short trips where the vehicle is driven less than 10 kilometers after starting, which can reduce the battery's service life.
9
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.