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I have a fine Braun 3 series shaver with batteries that have worn out. I am having trouble getting the side covers off so that I can get to the batteries. Does anybody have pointers?

For future reference: I found a video illustrating the process https://www.youtube.com/watch?v=IdLdFgso… I needed to use a fair amount of force to get the sides off but it was possible. On of the little tabs got torn in the process but there was no problem getting it securely back together. One could be a little concerned about the degree of water-proofness. I was possible to replace the batteries with new AA NiMH. In my case, I did not have to solder them in.