How to revive a dying laptop battery

shows us how to help batteries last longer … and what to do when they run out!

First, the basics
Most laptops use batteries that can last for 3-5 years, or about 1000 charges. (A premium laptop’s battery might last longer.) Every time you charge your battery, the total capacity of the toshiba pa3107u-1brs battery is diminished. Originally it may have had a run time of 3.5 hours, but after a year it’ll run out of juice at 3 hours, even on a full charge.
If your battery capacity has diminished, there are a few things you can do about it. First, you have to correctly gauge how much capacity has been lost. There are free downloads to do this job, like toshiba pa3291u-1brs battery Bar (for Windows PCs) or Coconut Battery (for Macs). These will compare your battery’s current maximum capacity to how long it lasted when it was new.
(UPDATE- we originally recommended Battery Eater and while the program works great, their download site has been compromised and we are recommending an alternate program, toshiba tecra a3 ac adapter Bar downloadable from CNET.)
Calibrating your toshiba pa3356u-1brs battery
You can’t miraculously reconstitute your battery’s capacity. It loses power over time due to chemical reactions taking place in the battery, as it chugs along powering your laptop. You can’t undo those changes, but there is one common Asus A2H battery issue you can fix: In many laptops, the operating system’s battery meter gets out of sync with how much juice the battery actually has.
Imagine if the gas gauge on your car dashboard was misreading how much gas you actually had in the tank. You’d either run out of gas when you thought you had a quarter of a tank left, or you’d be filling up too frequently. In your acer aspire 5100 battery, this can mean your laptop shuts down abruptly when the meter says you have 30 minutes left. Or else the meter might warn that you only have five minutes of battery life left and shut your laptop down, when it really has another 20 minutes remaining.Acer Aspire 2000 Keyboard
Recalibrating gets the battery meter to correctly read the current state of the battery, so you and the operating system know where you stand with existing acer aspire 5500 battery life.