I’ve heard that you should replace a laptop battery every two years. I’ve also heard that it should be replaced once it can’t keep a very long charge like it used to. At what point should it be replaced?
As RedHeat points out, there is no time frame but there is a limit to the amount of times it can be recharged. Today’s computers with Li-Ion batteries can be recharged 1000 cycles before replacement is recommended/needed. Unfortunately, no one (I know of) is going to count all 100,000 percents of charging needed to know when to replace the battery. The laptop itself, which could easily keep track of that, doesn’t (some maunfacturers make attempts at it but so far, they seem to be less than stellar in their accuracy)
So How to Know When It’s Time to Replace Your Laptop’s Battery
No matter how well you treat your laptop’s battery, it will eventually die. If you’re lucky, it will be time to replace your laptop by the time its battery dies. If you’re not, you’ll need to replace the battery.
Battery death can seem sudden, but it doesn’t have to. Windows will warn you when your battery reaches extremely low capacity levels, but you can also keep your own tabs on its capacity.
Windows Will Warn You
Windows doesn’t normally keep you up-to-date with your battery’s capacity level. As you use it and it weakens, you’ll just notice that your laptop doesn’t seem to last as long on battery.
Eventually, when your battery reaches a low enough capacity level, Windows will warn you. You’ll see a red X appear on the standard battery icon in your system tray and, when you click it, Windows will inform you that you should “consider replacing your battery.” Windows also says that your computer might shut down suddenly because there’s a problem with your battery — in other words, your battery can’t hold enough of a charge to power your laptop for long when it’s not connected to an outlet.
Note that this warning was added in Windows 7, so you won’t see it if you’re using Windows Vista or XP.
How to Check Your Laptop’s Battery Capacity
If you’re curious just how far your laptop’s battery capacity has declined, you can use a third-party tool to view it. NirSoft’s free BatteryInfoView does this well, displaying the battery’s approximate wear level, the capacity it was designed to have, and the capacity it currently has.
For example, in the below screenshot, we see that the battery was designed to hold 86,580 mWh of energy. However, the battery’s current capacity at full charge is only 61,261 mWh. In other words, the laptop’s battery only holds 70.8% of its original capacity when fully charged.
Some batteries may display more information, such as the number of charge and discharge cycles they’ve been through.
How To take care your laptop battery?
1. Don’t modify or disassemble the battery.
2. Don’t incinerate or expose battery to excessive heat, which may result in an exposure.
3. Don’t expose laptop battery to water or other moist matters.
4. Don’t pierce, hit, step on, crush or abuse the battery.
5. Don’t left the battery unused for a long time.
6. Don’t place battery in device for a long period of time if device is not being used.
7. Don’t setting your battery in the high humidity, high temperature, strong vibrative and dusty place.
8. Don’t forget to take away your battery from the device if you will not use it for a long time.
9. Don’t short circuit of the terminals by keeping your laptop battery pack away from metal objects such as necklaces or hairpins.