How Many Years Can the BYD e5 Battery Last?
2 Answers
The BYD e5 uses a ternary lithium battery. Due to the chemical properties of ternary lithium batteries, their capacity naturally degrades over time, leading to a reduction in driving range. According to the manufacturer's guidelines, the power battery should be replaced entirely after 8 years or 150,000 kilometers, while the battery cells are covered by a lifetime replacement warranty (for 1, 2, or 3 sets). Proper usage and maintenance can extend the lifespan of the BYD e5 power battery: 1. Regularly use charging equipment to fully charge the power battery (it is recommended to perform a full charge at least once a week). 2. When storing the vehicle unused for an extended period: Always charge the battery to 100% first, then discharge it to between 30%-40%. If the storage period exceeds three months, the battery must be recharged; otherwise, it may lead to over-discharge, reducing battery performance. 3. Charge the battery when the power level drops to the warning red mark: This ensures that the vehicle does not run out of power and become stranded. It is not recommended to charge the battery only after it is completely depleted, as this can negatively impact the battery's lifespan.
I've been driving the BYD e5 for over three years and feel the battery is quite durable. I mainly use it for commuting in the city, and now a full charge can still get me close to the advertised range. I've heard that lithium iron phosphate batteries inherently have a long cycle life, which is why the manufacturer confidently offers an 8-year warranty. However, it's important to avoid frequently draining the battery below 10% before recharging, as that can significantly damage the battery. A friend of mine drove his car for five years and the battery health was still at 85% when he traded it in, though this is also related to him not using fast charging often. On hot days, try not to charge immediately after the car has been exposed to the sun. Batteries parked in underground garages clearly degrade slower than those parked outside long-term. In short, with normal use, it should last seven or eight years without issues, and there's always the warranty as a backup.
