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Why is the laptop battery becoming weak after 1 year?

Many users will find that the battery power has dropped significantly after using it for about a year, and the battery is no longer "durable" after charging, and sometimes it can only last for a few hours. Is this a quality problem? In fact, in most cases, this is a normal phenomenon of natural aging of lithium batteries.
In this article, we will explain to you why laptop batteries are low on power after one year of use, and how to use batteries reasonably to delay aging.
What is "battery aging"?
Laptop batteries mainly use lithium-ion batteries. The advantages of this type of battery are high energy density and no memory effect, but its performance will gradually decline as the number of charge and discharge times increases.
Battery aging is mainly manifested as:
- Capacity reduction (originally 5 hours of use per full charge, may only be 3-4 hours after a year)
- Voltage fluctuations become larger (more prone to sudden power outages or jumps)
- Charging becomes slower or cannot be fully charged
This is not a product quality issue, but a natural result of the chemical structure of the battery itself changing over time and use.
Why do batteries age?
1. Increased number of cycles
The life of lithium batteries is usually measured in "charge and discharge cycles". A complete cycle means using from 100% to 0% and then charging back to 100%.
The design life of laptop batteries from regular brands is usually 300~500 charging cycles, which is about one to two years of normal use.
After each cycle, the chemically active substances inside the battery will gradually decay, resulting in a decrease in battery capacity.
2. Use in a high-temperature environment
The battery is very sensitive to temperature, and high temperatures will accelerate battery aging. Long-term use of laptops in high temperature environments (such as using them under a quilt and not ventilating in summer) will cause the decomposition reaction inside the battery to accelerate, and the capacity to decay faster.
3. Plug in for a long time
Many users are accustomed to plugging their laptops into a power source for a long time. Although the current battery management system can reduce the risk of overcharging, long-term high-voltage operation at full charge will also accelerate battery aging.
It is recommended to enable the "battery care mode" in the operating system or brand battery management when working with the battery plugged in for a long time, and limit the upper limit of battery charging to 60%-80%.
4. Natural passage of time (calendar aging)
Even if the battery is hardly used and just sits there, it will "naturally age" due to changes in chemical properties. This is called "calendar aging".
Therefore, even if a brand new battery is stored in the warehouse for two years, its performance will be lower than when it first left the factory.
Is it a quality issue if the battery loses power after one year?
In most cases, this is not a quality problem, but the normal physical degradation of lithium batteries.
All laptop batteries sold by our brand are brand-new A-grade cells and have passed strict quality inspections. If there is abnormal degradation during the warranty period that is not caused by human damage, we will also provide you with professional support.
How to extend the life of laptop batteries?
To extend the battery life, we recommend that you pay attention to the following points:
Avoid the battery being at 100% power for a long time
Fully charge and discharge at least once a month to activate the battery
Avoid using the laptop in high or low temperatures
Use the official power adapter for charging whenever possible
Use the battery care mode to avoid unnecessary cycle consumption
Batteries are "consumables," and it is completely normal for the power to decrease after one year of use. The key is to understand the scientific principles behind it and master the correct usage habits to slow down the aging rate and extend the service life. If your laptop battery has been used for more than one year and the battery life has shortened, you may consider replacing it with a new battery to rejuvenate your device.
For high-quality, compatible, and guaranteed warranty laptop batteries, please visit our website to buy!
If this article still doesn't help your laptop battery, you can buy a new battery at BatteryMall.com
If you want to learn more about batteries, please visit:BatteryMall.com/blogs/support