Technical Support Bulletin

Battery is not recognized and does not charge

    Document details:

Satellite U400, Satellite Pro U400, Portege M800
 Model No.:
 Operating System:
Windows Vista 32 Bit, Windows Vista 64 Bit, Windows XP
   more details...  


The products of the Equium-, Satellite-/-Pro U400 and Portege M800 series may not power on or not recognize nor charge the battery out of the box or after a long time without AC Power.

  • The units won't power on battery
  • The operating system will display a "battery not available" error
  • The battery LED starts blinking after approximately 10 minutes


The BIOS must be updated to V3.0 or higher.


The BIOS must be updated to V3.0 or higher.
Please follow the link attached and choose your model

After updating the Bios it may take several minutes until the battery is recognized and is charging.


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