Happy first lawn mowing of the year day for me as well.
Pulled the batteries out of the shed where I have been charging them off and on over the past week.
Out of the mower the charger I have has to do parts of the pack at a time.
Droppped the batteries in and it worked no problems.
Past years I have had to screw around with loose terminals, etc.
So this year on this day the Force was with me.