How to Revive a Dead Laptop Battery - this is a tutorial on how to revive a dead laptop battery...
How to Fix a Dead Laptop Battery
Laptop battery not charging [HP, Lenovo, Dell, Asus]

Laptop Battery Repair Methods

Reviving a NiMH or NiCD Battery in the Freezer Determine if you have the right type of battery for this method
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how to restore some life to a laptop computer battery. While you can do a few things to boost your battery's lifespan, computer batteries must be replaced every 2 to 3 years for optimal performance. Also keep in mind that if your laptop has a lithium battery, freezing it or repeatedly discharging it completely will damage the battery further.

Tips
If your battery isn't charging, check the AC adapter and the charging port. These tend to wear out more quickly than the battery itself.
Laptop batteries do eventually die. If these methods don't work, you'll need to purchase a new battery. Batteries can be purchased both online and in tech stores such as Best Buy.
Try not to let the battery completely drain during regular use. If you see the “low battery warning,” plug it in to increase long-term battery life.
Lithium battery packs can enter a "Sleep" mode if you leave them completely discharged for too long. If this happens, you can usually take your battery pack into a tech department in order to have a professional "wake up" the battery with a power supply.
If your laptop battery is dead and you aren't able to get a new one right away, plug your laptop in and use it like a desktop until you can replace the battery.