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Information update for Battery Charging Control

Fujitsu is continuously seeking ways to improve the efficiency and safety of our PC products for the benefit of our End Users, both on new models and on those previously manufactured and sold. 

In furtherance of that effort, Fujitsu is now making available to End Users an installable Update for Battery Charging Control which can reduce the potential of a battery-related thermal incident. We have determined that, as the battery pack used in a PC ages, a slight reduction in the charging voltage has a positive impact on maintaining the safe operation of the battery pack. Our Update detects battery age and status, and regulates charging voltages accordingly. We encourage you to download and apply this Update to your Fujitsu PC. 

Because the Update varies according to model, and may not be available for all models, please confirm first that your PC is on this list below and click here to download the update tool

Model Name

Software to be updated

LIFEBOOK U727/U747/U757

Already applied

LIFEBOOK E547/E557

Already applied

LIFEBOOK T937

Already applied

LIFEBOOK U937

Already applied

LIFEBOOK P727

Already applied

CELSIUS H760

Firmware

LIFEBOOK AH556

BIOS

LIFEBOOK E556/E546

Firmware

LIFEBOOK E736/E746/E756

Firmware

LIFEBOOK S936

Firmware

LIFEBOOK U536

BIOS

LIFEBOOK T726

Firmware

LIFEBOOK T936

Firmware

LIFEBOOK AH555

BIOS

LIFEBOOK E554/E544

Firmware

LIFEBOOK S935

Firmware

LIFEBOOK T935

Battery Utility

LIFEBOOK T725

Battery Utility

LIFEBOOK U745

Battery Utility

LIFEBOOK AH564/AH544

BIOS

LIFEBOOK E734/E744/E754

Firmware

LIFEBOOK S904

Firmware

LIFEBOOK T734

Battery Utility

LIFEBOOK T904

Battery Utility

CELSIUS H730

Battery Utility

LIFEBOOK E733/E743/E753

Battery Utility

LIFEBOOK E752

Battery Utility

LIFEBOOK SH572/SH772

Battery Utility

LIFEBOOK SH782

Battery Utility

LIFEBOOK S762/SH762/S792/SH792

Battery Utility

LIFEBOOK CH702

Battery Utility

LIFEBOOK LH772

Battery Utility

LIFEBOOK P772

Battery Utility

LIFEBOOK P702/PH702

Battery Utility

LIFEBOOK U772

Battery Utility

LIFEBOOK S752

Battery Utility

LIFEBOOK T902

Battery Utility

LIFEBOOK T732

Battery Utility

LIFEBOOK T731/TH701

Battery Utility

LIFEBOOK SH771

Battery Utility


IMPORTANT NOTE: Depending on the battery pack age/condition, the battery pack run time on a charge will be reduced (in some instances) by as much as 35% after this update.

In addition, End Users should remember that all battery packs in PCs are consumable components that require periodic replacement. Even if the PC is used with power from the AC adapter, over time the battery pack will age, hold less charge, and ultimately must be replaced. Please consider the purchase of a new battery pack as appropriate to maximize the utility and safety of your PC.

Also, End Users should note that from time to time, there may be an abnormal issue with a battery pack brought to Fujitsu’s attention by the battery pack manufacturer which necessitates a recall. If the battery pack in your PC is recalled, you should follow the instructions that will be provided in each such instance to obtain a replacement. At present, there is only one active recall which impacted battery packs used in Fujitsu PCs; you can check to determine if your unit is impacted here:

Should you have any questions on this Information, please contact Fujitsu at fpca.helpdesk@hk.fujitsu.com.