why does my computer need a battery
most computers have a small battery in many cases the battery is soldered directly onto the motherboard but the battery is usually in some sort of holder so it is easy to replace computers are not the only things that have a small battery like this-camcorders and digital cameras often have them too just about any gadget that keeps track of the time will have a battery
In your computer the battery powers a chip called the Real time clock chip the RTC is essentially a quartz watch that runs all the time whether or not the computer has power the battery powers this clock when the computer boots up part of the process is to query the RTC to get the correct time and date a little quart clock like this might run five to seven years off a small battery then it is time to replace the battery
when should the new battery be replaced
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