Sure is.
Sorta wish I hadn't gotten a new BTI replacement a few months ago.
Oh well, live and learn, I think is how it's supposed to go
Dreambird, FWIW. From another of Kelly's
reading assignments at the time I was shopping for that replacement battery, I came across an interesting suggestion that meshes (after a fashion) Moore's recommendations.
That suggestion: if you have an old battery (with some life left in it) and a new one, keep the old one for use only at home and the new one only for travel, that way it's more apt to be fully-charged and fully-discharged through use, rather than continually plugged in and unplugged before an entire cycle has occurred.