matrix column, as shown in the annotations of the column headings in Figure 1. y is the chapter number within the specified notebook. It is the same as the row number in the matrix which is to generate the material for the chapter. z is a mini-document number within the chapter (row). This allows for the generation of a
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.
Get Slate in your inbox. Laptops: The typical lifespan of a lithium-ion laptop battery is about 18 months to 2 years, Buchmann says, but yours will last much longer if you don't punish it too much. The main stresses include undercharging, overcharging, and one that few of us consider: heat. Temperatures inside a laptop can reach more than 110 degrees Fahrenheit, which is hell for a battery. Ideally, Buchmann says, you should try to keep your battery charged from 20 percent to 80 percent.