How can I update a BIOS without battery?

Solution 1:

With Dell BIOS updates you can run the BIOS update exe at the command line and add /forceit:

• Copy the BIOS update .exe file locally on to your PC
• Open the command prompt as the admininstrator
• Navigate to the location of the .exe file
• Type the name of the .exe file and add /forceit to the end eg: E7440A13.exe /forceit
• Press Enter

The update should start and ignore the lack of a battery @ 10% charge.

Solution 2:

Update: Oh yeah, and do make sure to use the latest upgrade. In your error screenshot above I can see you’re using an older update.

I suggest you use Rufus to create a MS-DOS-bootable USB drive and then run the upgrade from DOS. Of course, you’ll have to copy the update to the USB drive as well.

Rufus settings should be set as following:

Then, after booting from the USB drive, simply start the flash program:

Then, follow the steps the flash program walks you through.

Like the others said, you might want to try the /ForceIt parameter. With a slash, not a dash. ;)