AC-PW20 Dummy Battery

Bought this to keep my camera powered for long periods of time. Functions perfectly for that purpose. I haven't had any overheating issues using this in my camera. Fits nicely into camera and slides back out easily. Perfect for vodcasting or video calls etc.

I recently started using the NEEWER DMW‑BLK22 AC Power Supply Adapter & DC Coupler (ASIN B0D95CVY27) with my Panasonic S5II and I’m very happy with the purchase. It delivers consistent power without relying on camera batteries, so I no longer worry about battery changes in the middle of a shoot. The build feels solid and the cable seems durable, which is exactly what I look for in gear I’ll be using often. What stands out is how easy it is to use: setup was straightforward, the plug fits securely, and the camera recognized the connection without issues. If you’re doing extended shooting sessions — time‑lapses, studio work, or just want to eliminate battery change‑overs — this product works really well. I’d recommend it to anyone who wants reliable constant power for their Panasonic mirrorless camera.

I am an audio guru but am an illiterate video user. I stumble my way through. I did not know that the battery door on a Canon EOS 7D needs to be closed before it will operate with any dummy battery. Thank God for Google. I removed the rubber grommet and ran the cable out of the battery comparment so I could close the door. Bingo, worked great.

Works perfectly as far as I can tell, I've had zero problems. And the price was great. In general I find NEEWER to be a good brand.

I have 2 Nikon Z30s that I use mainly for recording YouTube videos and teaching over Zoom. The Z30, as well as other Nikon, Sony, Canon, and similar cameras, are all known to overheat when using the standard battery while recording video. When they overheat they stop. This can often happen after only 30 minutes! That's really not acceptable from what is supposed to be "pro" gear. There's a notch in the battery compartment door where the dummy battery cord can go through, so it seems Nikon knows about this problem and knows people will use a dummy battery. I don't know why these companies don't address this issue. The dummy battery does 2 things. First, it doesn't get hot like an actual battery, which helps keep the whole camera cooler and working. Second, it allows you to power the camera through a standard AC plug and avoid having your battery run down in the middle of recording. You can get cooling fans that attach to the back of the camera, but they can be noisy and also run out of power. This is a much better setup, especially in a studio situation.

I wanted to try to use this adapter for a Nikon Z6III. The camera will recognize it but it will tell you that you need to replace it with the registered battery for this camera and due to safety it will shut down. Im gonna keep it until there's a new firmware.

working good so far to convert my camera into a webcam type setup. can't really speak to long term durability or reliability as i've only had it for about a month. but for that month... so far so good. will update my review if anything breaks.

Kinda cheap and janky but works great enough and is easy to use. Only issue is not being able to close the battery department during usage, which I believe could be fixed with a flat cable. Very durable.