Your laptop battery may not be charging at all or not charging fully for several reasons, including the following:
* Your laptop battery is bad. Although defective rates are less than 1% it is still a possibility that the laptop battery is bad. A simple way to test this is to see if another laptop battery will charge in your laptop, if so, then the battery you have is defective. If the laptop battery is being charged, but not all the way, then the problem is likely with the computer BIOS and an update will be required for the laptop to recognize and fully charge the laptop battery.
* The laptop power adapter is bad. The simple test for this is to try running the laptop solely from the laptop power adapter. If the laptop doesn't run off the laptop power adapter then you have a dead adapter on your hands. In some cases the laptop charger itself is faulty and may run the laptop but not have enough power to charge the battery. In this case try charging the laptop battery with the laptop turned off. If the notebook battery charges while the computer is off then the laptop power adapter is faulty and you will need to replace it.
* The computer motherboard may be bad If your new and your old laptop battery won't charge and the laptop charger is working properly. Also, if your laptop battery will charge in another laptop then that could be a sign that you have a bad motherboard.
If the battery stops charging everytime your charge indicator reaches 96-98%, you may need to recalibrate your laptop for the new battery. In order to recalibrate properly, you will need to set the Windows power management so the laptop does not go into standby or hibernation when the battery gets low. With Windows XP, navigate to Control Panel > Performance and Maintenance > Power Options. Set "Power Schemes" to "Always On". Under "Alarms", uncheck "Low battery alarm" and "Critical battery alarm". Under "Hibernate", uncheck "Enable hibernation", then click on Apply. This is the only time that we recommend taking the battery all the way down to zero percent. Unplug the ac adapter, and let the battery drain all the way down until the laptop shuts off. Then plug the ac adapter back in, and let it recharge to 100%. You may need to repeat the cycle 2-3 times before it actually reaches 100%.
If you purchased your laptop battery from Level 8 Technology and it's within warranty then use our warranty web form to request and RMA number so you can return your defective laptop battery to us and we can send out a replacement.