The extremely low battery fits into the TZ7 but only in the firmware version 1.1. Actually amazing how cheap you can buy batteries from other manufacturers. 6-8 times more expensive original batteries are currently. In my opinion, a fat Buh on the pricing policy for the battery of the camera manufacturer, if you consider that additional firmware is updated to block third-party batteries. If at least the original battery would last three times as long. But one needs to have at least. Two spare batteries if you do a lot of photos and videos all day. Let's see if this works with the back-degrees for newest cameras.