Verified to work in a Panasonic G3...  (At least for me)
927745
Whew!  My Panasonic Lumix G3 accepted these batteries!  These batteries last longer than the Panasonic battery that came with my camera, but the camera isn't capable of accurately displaying "used up" they are because of the extra capacity.  The camera won't show an accurate summary of the  declining power level.  Expect the batteries to run for a long time (looking like they have a full charge) and have the camera warn you to replace them unexpectedly.  This isn't any failure on the part of the batteries, as Panasonic puts some type of proprietary Micro Chip in the "Official Batteries".  Obviously, third party batteries aren't likely to have these.

On a similar note: Panasonic is a little paranoid about people using non OEM (original Equipment Manufacturer) batteries. I've heard that there is some kind of an encryption that has caused other models of cameras to reject some third-party batteries.  Plus, the camera manual warns you up-and-down not to use any "NON-Panasonic manufactured batteries".

No worries here.  The batteries fit.  They are the right size.  They charge well.  Last a long time. 225+ picture with Image Stabalizationon, Occational Flash, LCD Screen on, and writing in the Largest Format in both JPG and RAW.

I also prefer the charger to the OEM one by Panasonic.  The indicator lights on Panasonic seem backwards (Off while charging, and Red when charged?)  This one uses Red for Charging and Green for charged.  It also works well in my car (which is why I got it).
4797617
So far so good...have tested on my N800, Kodak V1233 720p video camera, Toughbook 52 (XP SP3) and TX1400 TabletPC (Vista). I didn't rate it 5 stars only because I haven't tested the card for long and haven't maxed it out yet....plus it doesn't work on my primary computer a ST5111 TabletPC (XP SP3). I don't blame the card manuf...rather Microsoft for this problem.

Update: I downloaded Fujitsu SD reader patch for my ST5111 and it works there now too! Therefore I would give this 5 stars. Works with all my stuff.
4362901
I purchased this because the picture matched the battery for my Panasonic Lumix DC Vario--a DMW-BCK7PP. They sent me model DMW-BCK7E. Though the amperage and voltage are the same (3.5V, 650mAh, 2.5 Wh), I do not yet know whether this battery will actually work in my camera because I have to charge it. I will update once it finishes charging.

Also to note: though OEM by all observations, my product does not look new as the box was totally trashed and has been opened previously (not sealed). Interestingly, the included instructions do not include English, though they do include Norsk, Greek, Svenska, Suomi, Spanish, Portuguese, Netherlands and Denmark. I suspect I have been sent the version that is supposed to work with 220V-compatible charges in Europe (I am in the US). We'll see if it will charge with my charger!
830841
Works perfectly! No issues to report! So excited to use my camera more often!
2648653
Had already ordered this before the other guy posted this does not work with A series or E series p2 cards.  Tried 4GB 8GB and 16GB cards with the panasonic driver install utility.  This did not work for me.  But with a card formatted in a camera that was setup in SD I was able to take the card plug it into the adapter then plug the adapter into the computer.  Open device manager and find the mass storage controller that has the question mark next to it.  Right click on it and update the driver.  To find the correct driver you will need to install the driver called p2cache.inf located in program files/panasonic p2/drivers/card.  This got the P2 cards working if I was using a camera set in SD.  If the camera was set for HD and the card was formated in it then I was unable to get it working.  I don't know, however, if that is because the first card I used when installing the driver was SD.  And since this laptop is for SD use I am quitting while I am ahead. Cameras used were AJ-SPC700P which is SD only and AGHPX170P set to SD and another AGHPX170P set to HD.  SD formatted cards from both cameras worked. Also remember to unplug the express card adapter out of the computer to change the P2 card.
2749241
Great purchase, buying a used camera is a little spooky, amazon provides assurance it won't go bad with no resolve. So I did and it was, and is, as good as I could hope. This G5 programs the same way as my lumix G1 and GF1 with useful things like touch screen or button input, it has simpler controls with more manual options, and the sound on video or dubbing is  excellent stereo with just the built in mic. UBER HAPPY!!  M. R.
4976139
Works MOST of the time on my GH4, and even when it doesn't I just have to turn the camera on and off. It's never outwardly rejected any of my Canon or Tamron glass. Fit my budget just fine until I can invest in a Metabones adapter to benefit from the extra stop.
3302418
Works perfectly with Panasonic Lumix DMC-FZ40!

Initially, I thought that it's not working after I inserted it on the battery area of the camera. I decided to charge it. After charging, I tried to use it and I'm glad that it works on my camera!
4074976
Great for hooking my Panasonic G7 up to my Ninja Inferno. Would be perfect on a rig with the Atomos mounted behind the camera. Build quality is solid.
The Micro HDMI angle is at a point that could pull on/stress the socket/plug, so watch out for that.
257858
Installed onto the DJI P3 Standard remote, and it works flawlessly!  Minor mods required.
3722020
These only worked on my Panasonic G7 & G85 after I removed the arms on each side.  If I left the arms on, it was VERY difficult to get the cover on and even harder to get it off.

With the tabs removed, the part is serviceable....works pretty good, just a bit loose.

I also purchased the SODIAL(R) caps at the same time...those are absolutely fantastic.  Fit my Panasonic Cameras like factory!
3905749
perfect to motorola G, one try needed, looks like the pictures, have holes to frontal camera, audio speaker and the led
4101280
It worked in my Olympus E500 camera; sweet! By using the Eye-Fi more Raw pictures to Facebook, iCloud and MacBook Pro!
248819
Not sure who to blame here, probably Panasonic to some degree, but this will NOT work with the GH4.  The camera will power on but you cannot shoot photos and it just crashes the camera.  This grip also doesn't attach snugly against the gh4, and wiggles around a little even when screwed on firmly, hence my one star.  Now I need to figure out how to send back to china.  Lame.
3109000
the adapter seems to fit my LG  G3 phone properly, even with the protective case on the phone. I have not used the product yet, but it appears to fill my needs adequately at a good price.
3494046
Have H.P Computers Guess they know how to make Cards,So far its working fine in my Panasonic Camcorder. Going to California This will get a good Testing
2571500
Just got this today and tried it out on a newly-acquired Panasonic DMC-G2 m4/3 camera.  It works fine both indoors and out, and up to at least 30' (which is as far as I tried) with no problems whatsoever.  This will be a very useful device and at a bargain price as far as m4/3 camera accessories go!

However, the power button on the receiver sticks up far enough above the plastic case where it could very easily be turned on inadvertently while being stored in a camera case.  All it takes is 2 seconds of pressure and it's on (and another 2 seconds of pressure after first releasing the button will turn it off again).  To stop this from happening I'll either have to take out the batteries, or find some way to store it in a camera bag so there's no chance of the button being pressed.  If the button were recessed this would not be a problem - this is an elementary design flaw that keeps me from giving this unit 5 stars.