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.
How long should my laptop battery stay charged? I have an Acer Aspire 5315 computer, purchased Christmas '07. I use it mainly at my desk, so it is plugged and charging almost constantly. However, when I unplug it I get about 15 minutes before it starts beeping at me to recharge. Is this normal? Seems a bit pointless for a mobile device. Also, if it is a problem with the battery, is this sort of thing usually covered under warranty? Thanks.