Tagged with dmc-g7 - Personal View Talks

Replacement for the stock battery for G7, GH2, possibly the new G85

DrDave — Sun, 02 Oct 2016 11:32:48 +0000

Actually, a good replacement for the stock battery. Maybe more. For G7, GH2 &c. possibly the new G85

I use a lot of the BLC12 Batteries. I buy the Panasonic ones; they aren't cheap but they last the longest and don't turn the camera off with no warning.
However, I do buy aftermarket batteries for testing from time to time. They often have very high ratings, and they never work very well.
A few years ago, I bought the DSTE "1600mah" battery. It had about 70 percent of the stock battery's power, and the stock battery is 1200 mah. So that's 840mah, or about half the advertised capacity.
A few weeks ago, I purchased the 1700 mah version at this link:
https://www.amazon.com/dp/B00MEAMBQU
It weighs 55 gm as opposed to the stock 50gm. Previous clones weighed 46 and 48 gm.
Now before you get excited, the extra weight is probably ballast, since you can't squeeze more cells into a battery, as a general rule.
However, after extensive testing, this battery is equal to--not better--but equal to stock. The only difference is that the shutdown curve is a bit steeper.
So it isn't "1700" mah, but it is basically a stock battery.
This was quite a shock, but I repeated the tests several times. In one test, I simply turn on the camera and record video until the battery croaks, and measure the time. Both the stock battery and the DSTE run the G7 for two hours of video, sometimes a few minutes more, sometimes a few minutes less. So, finally, an inexpensive option. At least for this batch. Also, see my post on the cheap external battery that will run your camera all day.

Possible Panasonic Production flaw in G7 cameras

DrDave — Wed, 31 Jan 2018 15:47:00 +0000

I have quite a few G7 cameras. A few of these intermittently exhibit some strange behavior where if you press on the mode dial, or in several spots on the back of the camera (where the LCD stores) the mode and the screen jump around rapidly. Popping the back off (easy, but don't do it if you don't know what you are doing) reveals some interesting things. In one corner, and I think this is possibly the problem, there's some small wires that don't quite fit into the clip. They are very thin, so push them into the clip very carefully. Also, be very careful of the ribbon cables.
All of my cameras work perfectly now. After taking the back off, I gently flexed the circuit board towards the lens a few time, reseated the wires in the corner, made sure all the ribbons were in place and fully in their clips, and blew some compressed air into mode dial switch. Not sure which of these fixed the problem, but I suspect it is the wires because some of my cameras have some extra shielding there with a different clip and some do not.
If you do need to pop the back off, make sure to remove the screw in the battery bay and also make sure to remove four screws in the viewfinder. You need to slide off the rubber seal. Again, disassemble only if really needed at your own risk.
When you open the back, you can see that the whole back is a metal heat sink, with a small foam pad in the middle that sits on the hot chip. Inspect that foam as I think it dries out over time if you plan to keep the camera.
To test the (assembled) camera, lightly press the upper right corner of the back where the top of the LCD would go after flipping it out. Try it both in standby and record mode. If nothing happens, leave it be. If under warranty, I recommend factory service over trying to fix it. I suspect there's a design problem that affects some of the cameras.

Praetorius: Dances from Terpsichore (1612)

DrDave — Mon, 04 Sep 2017 23:56:21 +0000

ax100s and G7s

O Magnum Mysterium

DrDave — Thu, 24 Nov 2016 01:53:08 +0000

A consort of viols.
3xG7 with Leeming Lut, GX85