Is it bad to charge laptop while using it?

Does It Matter if Your Laptop Is Always Plugged In?

The appeal of a laptop is its portability and convenience, which makes it ideal for working on the go and business trips. Laptops are only as good as their batteries, however, and proper care of your battery is essential to making sure it retains a long life and charge. Leaving your laptop plugged in constantly is not bad for your battery, but you will need to be careful of other factors, such as heat, to prevent your battery from damage.

Laptop Batteries

Most laptops use lithium-ion batteries. Unlike nickel-based batteries, lithium-ion batteries don't suffer from the "memory effect," meaning that discharging and recharging them will not have an effect on long-term battery life. Once your battery is charged to full capacity, it will simply stop charging, so keeping your laptop plugged in will not cause any issues to your battery.

Cycles and Calibration

With lithium-ion batteries, it is better to avoid discharging them completely then recharging them to full capacity -- this is called a "deep cycle," and this process is only useful for nickelcadmium and nickelmetal hydride batteries. However, you should perform a deep cycle once a month or so to recalibrate the battery. This allows the battery monitoring mechanics to remain accurate when displaying battery life and charge.

Heat

While leaving your laptop plugged in constantly is not detrimental to its health, excess heat will definitely damage a battery over time. Higher levels of heat are most commonly produced when you are running processor-intensive applications like games or when you have many programs open simultaneously. When your computer is running hot and it is plugged in, disconnect the battery and keep it somewhere cool to prevent heat damage.

Battery Care

To perform a deep cycle, first charge your battery to full capacity, then let it sit for about two hours to cool from the charging process. Unplug your power cord, then set your computer's power save settings to hibernate once your battery reaches five percent. Once your computer starts hibernating, leave it for about five hours, then plug in the power cable and let it charge to full capacity again uninterrupted.

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