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I have started to feel that my battery is reducing the backup time with each passing week. My laptop is about a year and half old and I think it is quite natural for my battery to start wearing at this point of time but just for my knowledge, I would like to know that what is the better way of using a laptop with AC power. I mean to say that What should I do when the battery is fully charged and I am still using the AC power. THe possible options would be: I should remove the battery from the laptop and continue working on AC power I shold remove the AC power (even if it is available) and start using the laptop on my battery until recharge is needed. I should leave the battery in and also keep the AC power plugged in and keep using my laptop this way. Let me discuss each of theshe options separately: The first option ("Removing the battery") is not really a valid option for me because the electricity is not reliable here and you won't know when the power fails. So in this case if remvoe the battery and a power failure occurs, I will lose all my unsaved data and there is likelihood of damaging my hard drive and other computer components. The second option ("I should remove the AC power") is quite valid for me but I don't like it. The reason is that sometimes you won't get the AC power for many hours at a time and if you have already removed the AC power the charge left on you battery is 50% and then a power failure occurs (which do occur all the time), then I won't have much battery backup left to work with and I would be left without any charge after and hour or so. The third option ("keep both battery and AC plugged in") is what I normally do. I have tried to research about using this method and I have become more confused than I was before. There are sites which would tell you that it is a good method and you won't damage your battery even if you keep it plugged in after it has charged completely, but you just have to make sure that the batter doesn't get heated up too much. Other sites would tell you that keeping the battery plugged in (while on AC power) after it has charged completely would damage your battery and you should either remove the battery or remove the AC power. It is very confusing and I am unable to find any authentic information on this subject. SO anyone, please share your views on this and tell me which method you use when you are working with your laptop. For those who might want to help, The laptop I use is HP DV6 3040us and the battery is Li-ion battery.