I love this gismo. I have a Lakewood acoustic that has a very hard to reach battery in it...the BOM reads it just by pluging in into my guitar. It worked well in my bass players Warwick bass as well.
I also use several pedals when I play out, and it works great in all of them too.
I do have a buddy who has a newer Taylor acoustic, but it would not read the battery in his guitar...don't know why, maybe it's not for all guitars, but it works great in mine!



