NOTE: You, the customer, are solely responsible for data security. WinBook strongly recommends that you perform a backup of all personal data contained on your system prior to performing this procedure. Warning: WinBook will NOT be held responsible for any data loss incurred during this process.

Warning: Please make sure that there are no external devices attached to the unit. Running battery calibration with other devices attached could result in inaccurate battery readings.

1. With the battery in the unit, plug in the A/C power and let the battery fully charge. The battery charging light will switch from amber to no light once the battery is fully charged. If the battery is not charging properly, you may begin the calibration after leaving the computer plugged for 3 to 4 hours. 
2. Go to the CMOS setup program by tapping the F2 key immediately after booting the unit at rate of about twice per second.
3. Go to the Power section of the CMOS setup program.
4. In the Power section, select Battery Calibration and press Enter.
5. Highlight Yes to Calibrate your battery now and press Enter.
6. At the Battery Calibration Program screen, choose Y.
7. Unplug A/C power. Press Y to start calibration.  The calibration utility will drain the battery and the unit will power off by itself. 
8. After the unit has shut itself off, plug the A/C adapter in. Let the battery fully charge. The battery will charge faster if the unit in not turned on. This process may take up to 4 hours to complete.

Your feedback is greatly appreciated. If you have noticed any problems with this tech article, or if you feel that something is not clear enough, please E-mail our Technical Support department by clicking on the link below. Please include the Technical Article Number and the specific area that you feel is inaccurate. Thank you. 
WinBook Tech Article Feedback

Disclaimer: This information is being provided to you as a service from the Technical Support Department of WinBook Computers. It is intended to assist you in the resolution of your technical problems or questions. If you feel uncomfortable implementing any of the information or suggestions contained herein then you should e-mail the WinBook Technical Support Department. WinBook will not be held responsible for any loss of information, data or programming as a result of the use of this TechNote.