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when the computer is turned off, the AC adapter charges a completely discharged battery to 80 percent in about 1 hour and to 100 percent in approximately 2 hours. Charge time is longer with the computer turned on. You can leave the battery in the computer for as long as you like. The battery's internal circuitry prevents the battery from overcharging.
So About 2 to 3 hrs
When you connect the computer to an electrical outlet or install a battery while the computer is connected to an electrical outlet, the computer checks the battery charge and temperature. If necessary, the AC adapter then charges the battery and maintains the battery charge.
If the battery is hot from being used in your computer or being in a hot environment, the battery may not charge when you connect the computer to an electrical outlet.
I have some tips to keep your laptop battery live longer 1.don't undercharging and overcharging,laptops battery can reach 100 degress Fahrenheit and such heat can damage your battery. slowly but sure 2.ideally,you should try to keep your battery charged from 20 percent to 80 percent. i know it's inconvenient to unplug the charger before it reach 100 percent,but try to keep it charged near 80 percent 3.try to charge your battery constanly,and unplug it when you think its almost fully charged,overcharged can heat your battery and damage it 4.keep your laptop as cool as possible,don't try to charge the battery when the computer is turned on,even if the battery is going to 0 and you still need to use it,just shut down the laptop first and charge it,at least until the battery is charged 20%,unplug the charger and turn it on
Well,there are many other tips to keep your battery alive,but i only have those 4,thanks for using fixya and good luck with the tree-planting project,i love environment very much
Its a feature of the laptop, you use it plugged in more than battery power right? If you go toStart Menu/Programs/Samsungthere should be a program called"BatteryLife Extender". Click on it and you can choose to either let it charge to 80 percent or all the way to 100. However, if you use it plugged in mainly then I would recommend leaving it only to 80 percent to avoid possible discharging of the battery from constantly charging. Hope this helps.
On calculators you do not usually get percents. Instead, you get values which can be converted to a percent. For example what percent is 245 out of 987. You divide 245/987=.248. This is essentially the same as saying 24.8 percent. You move the decimal over 2 values. You can also round to get a nice percent number such as 25 percent. If you are trying to put in a percent lets say you have to find 47% of 80. You just multiply .47 * 80= 38.4
Fully charging the battery takes about 4 hours. You can also fast-charge the battery to 80 percent capacity in 1 hour (2 hours for iPod (Click Wheel)). Charging the battery may take longer if you're using iPod as it charges.
Dont be panic. Your laptop has absolutely no problem.Your manufacturer had set a 80-20 policy for the laptop battery charging such that the battery wont be charged to 100 percent but it will charged only upto 80 percent. The makers of the lap are doing this because to give good life to the battery.You can change it by going into the power options inside control panel.
Check your mains adapter plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced.
If the adapter is OK then connect it to the laptop power it up then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard.
This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. I suggest you get a quote first.
If the battery will not charge or only has enough for a few minutes or less of power then it is (past) time to replace it with a new one. Depending on how you use and charge expect about 2 years of usable life out of a battery. They seem to make most of these just before quiting time on a Friday so they really don't last. I do have a couple of laptops I use both on and off the charger that are much older than that
One is from 95 and still gives 5 hours of charge.
First check if it might be replaced under warrenty. OEM or Store purchase warrenty's cover this.
If its coming out of your pocket it really pays to shop around. I was replaced one a week ago and was quoted $84 to $176 in town. The higher prices were from computer stores and were saying a week to get it in. The $84 was a battery store and was in the next day.