Lobak Vladimir

I had the same issue with my old MBP 2012 (15”) and nothing I found on the Internet helped. So I ordered a new battery and replaced the old one with it and then did an SMC reset (shut down MBP, then hold Control-Shift-Option + Power key for 10 seconds, then release and power up). And.. Magic! It seems that trackpad is back in business :) I just made the replacement today and so far the mouse cursor is working. Will see if its behaviour deteriorates with time…