Yeah, they are thin but that wouldn't affect the pressure of the mod contacts on the battery contacts. I'm really surprised that popping the battery out by spanking the mod on your palm is tearing wraps. Looking at mine, I just don't see how anything could catch the edge of my wrap. I don't hit the mod against my flat palm, I cup my hand a little. Sometimes it takes a couple of hits but the batteries always come out unharmed. Very strange. I guess just do what works best for you.
I think they are tearing going in - not sure but getting them in is SO difficult so I'll try your tips..
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