Ordered 2 of these and both work without any problems on a TZ7 with firmware 1.2.
The battery received does not look like the one in the photo so I have added my own image however, the one received states 3.6v and 895mAh which is an exact match to the original TZ7 battery (was a little worried it may be 3.7V as some BCG10(E) batteries are being sold on this basis and although I am sure .1V will not make any difference I would prefer it to be the same).
Both batteries actually lasted longer than the original! This test was completed shooting continuous video and although not a great deal different actually gave about 5 minutes extra. Batteries can hold charge less over time so I assume that the original has simply lost a little of its capacity.
I have also tested the batteries for memory issues and transfering files to PC which again have caused no problems. The battery also feels of an equivalent weight to the original - which suggests good quality cells, is very sturdy and is well made.
Overall extremely pleased and more than happy to give 5/5 *s