How long should I charge my laptop battery?

After purchasing a new laptop computer or battery for your laptop, we recommend that the battery be charged for no less than 24-hours. A 24-hour charge makes sure the battery is fully charged and helps with the battery's life expectancy. Once it is fully charged, you should not discharge it fully, if possible. Lithium-ion batteries (the type used in modern laptop computers) are strained, and may be weakened, when they are fully discharged. Doing so frequently can shorten the battery's lifespan.


You must give your laptop battery some attention from time to time if you want to get the most from it. A lithium ion battery needs to be calibrated at least once every three months by letting the battery completely drain and then charged until it is full.

Consult your laptop or battery documentation for precise information. If your documentation states something different, those directions should be followed.


Don't worry about overcharging the battery. Modern laptops will stop charging the battery when it is fully charged and switch over to AC power while the laptop is plugged into an outlet.

If you are excited to use your new laptop, it can still be used while it is plugged into an outlet. However, we suggest not unplugging it until it's been charged for that length of time.

After the computer battery has gone through it's initial charge, all battery charging should go until the laptop has reached its capacity. Often this will be after a few hours of charging.


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