|Make sure that you're looking at the actual "charging" led on the laptop itself (see your User's or Owner's manual if you need to) , and if it is the correct led, on an Acer laptop I have, when the battery is installed and the AC adapter is NOT connected, that led is OFF when the computer is NOT running , and ON when the computer IS running. |
If the led is on only when the computer is running and the AC adapter is not connected, that's probably the normal situation.
"the battery show 0%"
When does it show that ?
Only when the AC adapter is plugged in ?
If it shows that when the AC adapter is NOT plugged in, obviously the battery has enough power for the laptop to run. Something in your software may be screwed up.
How old is the battery ?
Laptop (main) batteries rarely if ever have a warranty longer than one year.
They work as they should for a year or so, then they begin to rapidly deteriorate - from what I've seen, by the time two years has gone by, they cannot be charged to anywhere near their rated capacity, and it gets worse after that.
Old laptop batteries often develop internal shorts and that can cause all sorts of problems.
If the battery gets HOT rather than just warm after at least a half hour has gone by with the AC adapter plugged into the laptop, it's definately internally shorted - you MUST replace it. Trying to charge internally shorted batteries has been known to cause the laptop to catch on fire !
It never fails to be a puzzle to me why owners of laptops are often so miserly about replacing the (main) battery.
You DO NOT necessarily need to buy the laptop brand's battery - you just need to buy one that is compatible with being used in your laptop model.
There are lots of clone batteries out there on the web that have the same one year warranty, they're often made in the same countries as the laptop brand's battery, and they often cost a lot less than the laptop brand's battery.
If your reason for not replacing the battery at regular intervals is you rarely or never use the laptop on the battery alone, then why did you buy a laptop ? The primary reason for buying a laptop rather than a desktop computer should be that the laptop is portable and can be used where there is no AC power ! If you don't actually need a portable computer that can be used where there is no AC power, you get a much better bang for your buck when you buy a desktop computer !