
Electric vehicle batteries generally last 2 to 3 years. Lithium-ion batteries are a widely used type of battery, with most pure electric vehicles utilizing them. Additionally, everyday electronic devices such as smartphones, laptops, and tablets also use lithium-ion batteries. The charging and discharging principles of lithium-ion batteries are quite simple. During charging, lithium ions move from the positive electrode to the negative electrode, while during discharging, they move from the negative electrode back to the positive electrode. Lithium-ion batteries are also known as swing batteries because the direction of lithium ion movement differs between charging and discharging. Battery degradation occurs because lithium ions react with the electrolyte during movement, reducing the number of available lithium ions. Over time, this leads to a decline in battery performance.

I think how long an electric vehicle battery lasts really depends on personal usage habits. I've been using an electric vehicle for commuting for over five years now, and the battery is still functioning normally. Generally speaking, lead-acid batteries are more common but have a shorter lifespan, typically needing replacement every three to five years. Lithium batteries, on the other hand, can last more than five years, even up to eight years. The key lies in how you charge it—avoid waiting until the battery is completely drained before charging, as that accelerates aging, and don't charge it under direct sunlight on hot days. Usage frequency also matters: for example, I drive short distances of 20-30 kilometers daily, which slows battery wear. In short, always check the battery condition before driving. If you notice it won't charge properly or the range has significantly decreased, be alert and visit a service center promptly. A deteriorating battery affects both range and safety, so don't delay addressing it.

From a technical perspective, the lifespan of an electric vehicle battery typically starts at three years, with an upper limit of around eight years. As a car enthusiast, I've learned that lead-acid batteries have fewer charge cycles, usually experiencing performance degradation after about 500 charge-discharge cycles. Lithium batteries are more durable, capable of exceeding 1,000 cycles. Therefore, the more you drive, the faster the battery deteriorates. Daily factors are also crucial: always use standard voltage for charging and avoid frequently using fast charging; prevent deep discharge by not letting the battery drop below 20% before recharging; also, ensure proper ventilation and moisture protection when storing the vehicle. Battery technology in newer models has advanced, with some lithium iron phosphate batteries being more heat-resistant and having longer lifespans. In summary, premature battery failure is often due to improper maintenance, and developing good habits can extend usage by one or two years.

I've driven electric vehicles for several years and think the battery can last about five to six years. The key is proper maintenance: regularly check the battery health, keep the charging port free of dust; avoid sudden acceleration and heavy loads while driving to reduce battery stress; don't park in prolonged direct sunlight or extreme cold, as harsh temperatures shorten lifespan. Older vehicles may degrade in three to four years, while newer ones fare better.


