Battery Builder cannot write library files — “no write access” when saving to OneDrive folder

Hi.

I’m trying to create a custom battery library using the Battery Builder app (Simscape Battery).

When I click Create Library, I get the following error:

“There is no write access within path:

C:\Users\yelin_mem\OneDrive - myCompanyName\Documents\MATLAB\Models\FMU model”

I believe this might be related to the folder being inside OneDrive, but I’ve already given every possible write permission in Windows.

Here’s what I’ve tried so far:

• Verified that my Windows user has Full control of the folder (via folder → Properties → Security).
• Tried running MATLAB as Administrator.
• Confirmed that it has no problem when I switch to a local path.
• Paused OneDrive sync (to avoid file locking).
• Set the folder and subfolders to “Always keep on this device.”
• The error still occurs only when Battery Builder tries to generate files.

When I change the output folder to a local path outside OneDrive (for example C:\BatteryTest), the library builds successfully — so this appears to be a OneDrive-specific issue.

I’d appreciate any help diagnosing this.

Is there a recommended way to work with Battery Builder projects stored in OneDrive, or should I always build locally and then copy the results manually?

Answer 1

[Xiangchun]

Hi @Ye,

In this case, I would recommend that you build the battery library on a local drive first and then copy them to a OneDrive folder.

Best wishes,

Xiangchun

[Ye]

Hi,

Thank you for the answer. I have quite some build to run, and it's not really convenient to build it locally and then paste it in, is there a way allowing me the work under Onedrive folders?

Best regards,

Ye Lin

[Xiangchun]

Hi @Ye,

As a temporary workaround, can you please try running the following in the Command Window before building the battery library?

fileattrib(pwd,'+w');

This assumes that you want to build the battery library in the current folder, which is a OneDrive path.

Again, I would still highly recommend building the library in a local drive first then copy it over to OneDrive.

Best wishes,

Xiangchun