Just to let you know, i had the same problem with my PCC, i made the felt fix to my lid, but that only helped a little, even with the felt pushing down the battery a little deeper, the recharge led didnt light every time and the pressure to the lid was scary when you think in long term.
I've spoken with my vapor guru/seller and he told me that its not normal to be forced to put something in the lid so the pcc would work as intended.. he was kind enough to replace my pcc and if u guys bought yours recently and need a foam/felt fix already, try to get it replace if you have a warrenty of some sort.
1 last thing, that would really cheer me up to hear about people who have a pcc that worked flawlessly or worked for many months whitout needing a lid fix.