One model has 4 connections, the other 3, 3.6V versus 3.7V (rarely is an issue) and they look to have other differences.
I'm going with no.
I recently purchased camera above, and I have couple of questions.
Can I use my old camera (TZ7) batteries (DMW BCG 10E) in my new TZ 40 camera ?
Can I use the old charger (for TZ7) as well?
I noticed that new batteries for TZ 40 are DMW BCM 13E (have 1250 mA).