Windows battery health step #6: Store smartly
If you won’t be using your laptop for a while (or you’ve unplugged the battery and set it aside), you should take care when storing the battery.
Remember: Laptop batteries don’t like being at 100% battery for a long period of time, and they definitely don’t like being at 0% battery, either. To preserve the battery as much as possible, drain it to 50% or so and then power it off before storing it. (Be sure to store it in a moderate environment, too — since extreme heat, cold, and humidity are bad.)
The battery’s power level will decline over time in extended storage, so you might want to pull the system out of storage and charge it back to 50% every six months or so. If you leave it alone for a few years, you might come back to a 0% battery. And, again, if it’s been at 0% for a while, that’s bad.
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