Tiny flat battery

This is a backblipped image of a flat Li-ion battery for my mother-in-law's Panasonic DMC-TZ3 camera that I've been using since my beloved Canon S110 died earlier this this year. The camera isn't as nice as my Canon, but given it's a lot older and it's not designed for the same target market makes the comparison not very fair anyway.

Couldn't find a O reference, but at the moment this battery has 0 charge...