Recently, I helped a friend deal with a laptop whose touchpad bulged due to a swollen battery. After disassembling it, I found that the battery had expanded and deformed, which was very dangerous. What's even more frustrating is that the battery was replaced less than two months ago! My friend complained again and again, and I could only comfort him while explaining how to choose batteries correctly.

This incident made me realize that many users ignore the safety of laptop batteries, and even choose inferior products to save money. However, an unqualified battery affects battery life and is likely to cause bulging, leakage, and even fire and explosion! Today, let's talk about laptop batteries to help you avoid potential risks.

Things to note when replacing laptop batteries

First of all, laptop battery aging is inevitable, but many people only focus on the price when replacing the battery and ignore the importance of battery quality. Poor quality batteries not only reduce battery life, but may also cause safety hazards and even damage the device!

1. Choose official authorized channels to purchase original batteries, and give priority to the official after-sales service of the notebook brand. For third-party batteries, it is recommended to choose manufacturers with brand certification to avoid purchasing products from small workshops.

2. Poor-quality batteries may use refurbished materials or unqualified batteries, which may cause short circuits, leakage, or even explosions. Real case: A notebook of a certain brand malfunctioned due to the use of third-party batteries, and a sudden fire occurred during charging, resulting in serious damage to the body.

"False labeling" of battery life: In order to save a little money and suffer a big loss, the actual battery life of batteries with falsely labeled capacity may be only 50% of the nominal value, or even lower. Poor-quality batteries may also damage the life of the device due to unstable voltage, causing damage to the motherboard or other hardware, and the repair cost far exceeds the difference in price saved.

3. Battery type: Mainstream laptop batteries use lithium polymer batteries, which perform better than traditional 18650 batteries. Capacity identification: The nominal capacity should be consistent with the original (such as 80Wh or 45Wh), and batteries with false capacity can be verified through professional software (such as MacBook's system report → power → battery information).

When testing the battery health, you can use tools (such as Powercfg /batteryreport for Windows or coconutBattery for Mac) to check the battery cycle count and design capacity. If the remaining capacity is less than 80%, it is recommended to replace the battery.

4. Reject the "low price trap": If the battery price is 30% lower than the market average price, it is likely to be a refurbished or disassembled battery, and its battery life may only be 1-2 years.

Some tips on replacing laptop batteries

1. During the warranty period, give priority to official services: Many brands provide 1-3 years of warranty for batteries, such as Apple MacBook batteries, which have a warranty of 1 year. If unofficial repairs are performed, the warranty may be lost.
2. Be wary of the "free replacement" routine: Some third-party repair shops use the name of "free testing" to induce users to replace high-priced accessories, so the charging rules should be clarified in advance.
3. There are risks in self-replacement: There are circuit boards and safety chips in the laptop battery. If non-professionals operate it, it may cause the computer to fail to start or damage the interface. The suggestion is: give priority to officially authorized services or professional repair shops.

Friends, although the laptop battery is small in size, it is the key to the safety and performance of the device. Poor-quality batteries not only pose a threat to personal safety, but also may cause the hardware invested in the early stage to be "meaninglessly damaged." It's really not worth the loss!

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If you want to learn more about batteries, please visit: BatteryMall.com/blogs/suppor