Disassemble Battery Pack 82028B (woodstock)


Hi, I have an external battery pack 82028B for the Woodstock serie. Unfortunately there is corrosion on the contacts, and I want to clean it. I try to disassemble it, but I didn't find how : there is no screws under the rubber feet, it's possible to push aside the left/righ sides but there is no spurs, up and down side are tight and I hesitate to force from there.

Does someone have experience on how to open it ?
Thanks - Jacques

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