I have a four year old battery for the back-up sump pump. Instructions
say to change it every three years (yeah I noticed I was behind),
however, the lights on the pump itself indicate that the battery is
still in good shape. So, should I trust the lights or just replace the
battery?

--
I want to find a voracious, small-minded predator
and name it after the IRS.
Robert Bakker, paleontologist