B300 Serial Nummber QRQode?

Where can i find the serial Number by the B300 Expansion. is there anywhere a qr Code to Scan?

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Wondering the same thing. There doesn’t seem to be a scannable code. I found a regular bar code on the bottom, it’s a white sticker with a bunch of numbers. I tried adding it to the app but it didn’t work. I guess we can only access it on either a ac200max or ac300 on screen or in the app.

Battery packs do not have a fixed SN code.
If you want to do a firmware update, you need to connect to the host and do the firmware update with the host.

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So if the B300 doesn’t have a SN code, then you’re telling us that we cannot add it as a device to our Bluetti App. Why would the B300 User Manual tell us to download the app if the B300 doesn’t work with the App?

@YogiMike
B300 cannot be connected to the app alone. It needs to be connected with AC300 as a whole before connecting to the app. This is also what the manual means. Sorry for the confusion.