Frequently draining your battery to 0% puts stress on the cells. The optimal strategy is to keep the charge level between 20% and 80% when possible.
Understanding Acceptable Battery Degradation Thresholds
When a battery’s capacity falls below 80% of its original rating, it is often deemed end-of-life. For example, a device reporting 92% health has a battery that can currently store 92% of the energy it held when it was new.
This is because below this point, the device may no longer provide sufficient runtime to get through a normal workday without a charger. Heat is the primary enemy of lithium-ion batteries; consistently exposing your device to high temperatures, such as leaving it in a hot car or using it on a pillow that blocks vents, can accelerate wear.
Determining Acceptable Battery Capacity Loss Thresholds
As the battery cycles—complete charges and discharges—it gradually loses the ability to hold a full charge, and this percentage drops. This is usually expressed as a percentage.
More About Whats a good battery health
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