Battery stuck in mount. WD40 doesn't seem to help.

[ckgrosse]

how much pressure can I safely apply to the case?

[Naranja_CT5+]

I think RAD has different batteries depending on your model.
At the risk of sounding silly. Does your battery have a key?

[inoxa]

which model do you have?  My RAD rover 5 got stuck and I used a rubber mallet on the bottom of the battery to remove it.  Turns out the battery connector and the battery cradle over heated and swelled.  I had to replace the connections.