Comment by rayiner

Out of warranty battery service on a Mac ranges from $130-200: https://support.apple.com/kb/index?page=servicefaq&geo=Unite.... I think that's a reasonable price considering Lenovo charges $140 for a 75-watt hour 68+ battery for the T450s: http://shop.lenovo.com/us/en/itemdetails/0C52862/460/D91DC49....

And for $130-200, they will replace your top-case (including keyboard and touchpad). I have had it done more than once and it was a same-day turnaround each time (couple of hours).

I wonder if there wasn't something more wrong with his laptop caused by letting a worn-out battery sit in there too long.