This package updates the battery firmware stored in the battery pack to fix problems, add new functions, or expand functions as noted below.

Note:

• This program is language independent and can be used with any language system.
• The messages from the utility are only available in English.

	What is Battery Firmware Update Utility
	Supported ThinkPad Systems
	Supported Operating Systems
	Supported batteries
	Summary of Changes
	Notes
	Updating Battery Firmware

This battery firmware update utility fixes an issue where some batteries indicate an incorrect full charge capacity value. Because of this error, the amount of energy available for use is artificially low, decreasing the amount of time the system can be used on battery. The fix is entirely contained in the battery firmware update; there is no need to replace any hardware for this problem.

• ThinkPad Edge 13 (Machine types: 0196, 0197, 0492)
• ThinkPad Edge 14, 15
• ThinkPad Edge E30 (Machine types: 0196, 0197, 0492)
• ThinkPad Edge E40, E50
• ThinkPad Edge E220s
• ThinkPad Edge E420s
• ThinkPad L410, L412
• ThinkPad L510, L512
• ThinkPad SL410
• ThinkPad SL510
• ThinkPad T410, T420s, T420si, T430s, T430si
• ThinkPad T510
• ThinkPad W510
• ThinkPad X1
• ThinkPad X100e

• Microsoft Windows 8 32-bit, 64-bit
• Microsoft Windows 7 32-bit, 64-bit
• Microsoft Windows Vista 32-bit, 64-bit
• Microsoft Windows XP Professional SP3

This is not an urgent update; the problem will manifest itself over a period of months. Eventually, the battery will erroneously indicate that it can no longer hold any charge, but this effect is slow and accumulating. Large enterprise customers can plan to do this update during their next planned system maintenance.

The battery firmware update is applicable to the FRU part numbers shown below. The battery firmware update will change the FRU number electronically stored in the battery (which is reported by Power Manager). This is done as one way to confirm that the battery firmware update has been completed. Obviously, the printed label will still show the "old" FRU number.

• FRU P/N : 42T4708 (ASM P/N : 42T4709)
• FRU P/N : 42T4714 (ASM P/N : 42T4715)
• FRU P/N : 42T4737 (ASM P/N : 42T4738)
• FRU P/N : 42T4757 (ASM P/N : 42T4758)
• FRU P/N : 42T4797 (ASM P/N : 42T4796)
• FRU P/N : 42T4803 (ASM P/N : 42T4802)
• FRU P/N : 42T4783 (ASM P/N : 42T4782)
• FRU P/N : 42T4789 (ASM P/N : 42T4788)
• FRU P/N : 42T4831 (ASM P/N : 42T4830)
• FRU P/N : 42T4807 (ASM P/N : 42T4806)
• FRU P/N : 42T4815 (ASM P/N : 42T4814)
• FRU P/N : 42T4839 (ASM P/N : 42T4838)
• FRU P/N : 42T4848 (ASM P/N : 42T4758)
• FRU P/N : 42T4849 (ASM P/N : 42T4709)
• FRU P/N : 42T4850 (ASM P/N : 42T4738)
• FRU P/N : 42T4851 (ASM P/N : 42T4715)
• FRU P/N : 42T4852 (ASM P/N : 42T4796)
• FRU P/N : 42T4853 (ASM P/N : 42T4802)
• FRU P/N : 42T4854 (ASM P/N : 42T4782)
• FRU P/N : 42T4855 (ASM P/N : 42T4788)
• FRU P/N : 42T4856 (ASM P/N : 42T4830)
• FRU P/N : 42T4857 (ASM P/N : 42T4806)
• FRU P/N : 42T4858 (ASM P/N : 42T4814)
• FRU P/N : 42T4929 (ASM P/N : 42T4928)
• FRU P/N : 42T4933 (ASM P/N : 42T4932)
• FRU P/N : 42T4937 (ASM P/N : 42T4936)
• FRU P/N : 42T4939 (ASM P/N : 42T4938)
• FRU P/N : 45N1039 (ASM P/N : 45N1038)
• FRU P/N : 45N1143 (ASM P/N : 45N1038)

Where:

• [Important] Important update
• (New) New function or enhancement
• (Fix) Correction to existing function

Version 1.12

• (Fix) Improved accuracy of calculating method for full charged capacity and remaining capacity for the following batteries:
  • FRU P/N : 45N1039 (ASM P/N : 45N1038)
  • FRU P/N : 45N1143 (ASM P/N : 45N1038)

Version 1.11

• (New) Added support for Microsoft Windows 8.
• (New) Added support for the following battery:
  • FRU P/N : 45N1143 (ASM P/N : 45N1038)
• (Fix) Improved accuracy of calculating method for full charged capacity and remaining capacity for the following batteries:
  
  • FRU P/N : 45N1039 (ASM P/N : 45N1038)
  • FRU P/N : 45N1143 (ASM P/N : 45N1038)

Version 1.10

• [Important] Fixed an issue where the Panasonic battery might indicate more level than remaining capacity and the computer might be suddenly shut down without any alarm notice. FRU P/N : 45N1039 (ASM P/N : 45N1038)
• (New) Added support for ThinkPad T420s,T420si,T430s,T430si.
• (New) Added support for the following battery. FRU P/N : 45N1039 (ASM P/N : 45N1038)

Version 1.09

• (New) Added support for ThinkPad Battery 39+ (6 cell Slice) for ThinkPad X1.
• (New) Added support for the following battery.
  FRU P/N : 42T4939 (ASM P/N : 42T4978)

Note:
Please refer to the README file under the "File details" section for a complete list of changes fixed by this driver update.

• To enable the battery to indicate accurate state of charge and correct battery health, do the following procedures after the battery firmware update by this
  software.

[Windows 8]
Reset the battery gauge for calibration, as follows.
1. Have your battery 100% charged.
2. Discharge it until 5% battery charge. Do NOT attach the AC adapter to the computer during discharge.
3. Have it 100% charged, again. Do NOT detach the AC adapter from the computer
   during charge.

[Windows 7/Vista/XP]
Reset the battery gauge only once for calibration. For details, refer to the Resetting the battery gauge" of Manual Update in the UPDATING THE BATTERY FIRMWARE section.

• To use this function, you should use the following versions (or higher) of BIOS and Embedded Controller.

• ThinkPad System	BIOS Version (Build-ID)	Embedded Controller Version
  L412, L512	1.14 (81ET38WW)	1.07
  L410, L510, SL410, SL510	1.38 (6JET80WW)	1.22
  X100e	1.25a (6XET42WW)	1.21
  X100e	1.25 (6WET26WW)	1.14
  Edge 13 (*1), Edge E30 (*1)	1.18 (6ZET31WW)	1.09
  Edge 13 (*2), Edge E30 (*2)	1.14 (6YET31WW)	1.09
  Edge 14, Edge E40, Edge 15, Edge E50	1.13 (80ET36WW)	1.13
  T410, T410i, T510, T510i, W510	N/A, support exists in initial release.

  
  Note:
  - *1: Machine type : 0197
  - *2: Machine types : 0196, 0492

Click here to find the relevant BIOS drivers.

Note:

• Before updating the battery firmware, make sure to attach an AC adapter to the computer.
• The computer should be shut down immediately after the battery firmware update is complete.
• Attention:
  Do not turn off or suspend the computer, or remove the battery or AC adapter until the update has been completed. IF YOU DO THAT WHILE THE UPDATE IS STILL IN PROGRESS, THE BATTERY MAY HAVE TO BE REPLACED.
• Even if the update abended, do not remove the battery from the computer. Then try the update, again. IF YOU REMOVE THE BATTERY BEFORE COMPLETING THE UPDATE, THE BATTERY MAY HAVE TO BE REPLACED.
• If the computer can not be turned off, remove the battery and AC adapter to turn off the computer. Then attach the AC adapter and the same battery and try the update again. IF YOU REMOVE THE BATTERY BEFORE COMPLETING THE UPDATE, THE BATTERY MAY HAVE TO BE REPLACED.

This section assumes to use Internet Explorer and Explorer.

[Downloading file]

1. Click once on the underlined file name with the left mouse button. Once this is done, a pop-up window will appear.
2. Follow the instructions on the screen.
3. In the window to choose Run or Save, click Save.
4. Choose the folder you would like to download the file to and click Save.
   A different window will appear and the download will begin and complete.
   Once the download has completed, there may or may not be a message stating that the download completed successfully.

[Extracting file]

5. Make sure to be logged on with administrative privileges.
6. Make sure the AC adapter and a target battery are firmly connected to the computer.
7. Locate the directory where the file was downloaded.
8. Locate the file that was downloaded and double-click it.
9. Follow the instructions on the screen.
10. In the "Select Destination Location" window, click Next. If you would like to select a different folder, click Browse.
11. In the "Ready to Install" window, click Install. All the necessary files will be extracted to the folder selected in the step 10.

[Updating the battery firmware]

12. Make sure the checkbox next to "Install ..... now" is checked and click Finish.
13. Follow the instructions on the screen to complete installation and restart the computer.

[Resetting the battery gauge]

14. Power on the computer and start Windows.
15. Start Power Manager by double-clicking the fuel gauge displayed in the lower right portion of the screen.
16. Select Advanced in Switch to: view.
17. Click the Battery tab.
18. Click Battery maintenance.
19. Click Perform Reset.
20. Follow the instructions on the screen.
    After reset is complete, the battery gauge will be calibrated.
    
    Note:
    If Power Manager is not installed or no Battery maintenance button is available in Power Manager, the battery gauge can be reset by the following instructions.
    1. Charge the battery to 100%.
    2. Disconnect the AC adapter from the computer.
    3. Discharge the battery until 5%.
    4. Connect the AC adapter.

Finally delete the file saved in the step 4.

Note:

• This procedure is intended for system administrators only.
• It is user's or system administrator's responsibility to shut down the computer later after update.

1. Refer to the "Manual Update" section, and download and extract the file.
2. In the step 12 of the "Installing files" section, uncheck the checkbox next to "Install ..... now", and then click Finish to cancel installation.
3. At the command line, execute LnvBFU.exe with the -s option.
   Example:
   [Path where the files were extracted]\LnvBFU -s
   
   The computer will be shut down immediately after the battery firmware update is complete.
   If you would like not to shut down the computer immediately after update, execute LnvBFU.exe with the -s -NoShutdown options.
   Example: [Path where the files were extracted]\LnvBFU -s -NoShutdown