He's right I nearly put a hammer through one of these years ago,not because it made me late for another call,was because it had me chasing none existent faults that it kept throwing.
And it crashed on testing the bells.
I've only ever touched that one since,well tbh I've never seen another but rest assured it would defo be a rip out job and I wouldn't even touch it, battery or not.
e manno, December 2013