Wasabi Power Canon LP-E19 Battery for Canon EOS R3, EOS-1D Mark III, EOS-1D Mark IV, EOS-1Ds Mark III, EOS-1D X, EOS-1D X Mark II, EOS-1D X Mark III

Works but they lose power very quickly, not recommended.

Wasabi Power Canon LP-E19 Battery for Canon I've been using Wasabi batteries in all 7 of my Canon cameras for over a decade and never had an issue with any of them and they all still perform well. This battery is being used in a 1DXII and is the first time I've used this style as my other batteries have primarily been LP-E6NH style. After putting this battery through the paces for the last few weeks taking over 20,000 pictures at soccer games, it's given me just as many shots or more as my Canon batteries. I've also seen no reduction in fps. I average about 4000 pictures in a 1.5 hour match and I review many of the shots in camera. I was able to use just this one battery for the entire match with plenty of juice to spare. The battery fit perfectly into the camera with no signs of over tightness before or after use and sealed well. I noticed no difference between it and my Canon batteries. The battery cap pops on and off easily and remains tight on the end while in my camera bag. The cap also works well on my Canon batteries as the originals no longer stay on. I wish I could find replacement caps. The battery fits into the 1DXII's charger with no issues exactly as the Canon version does. It charges quickly and accurately displays the % while charging. To maximize a battery's lifespan, I charge all my lithium ion batteries to about 80% when it's not an all day event. Being charged to only 80%, the Wasabi battery still had over 15% left at the end of the match, same as my Canon batteries typically do. I store my batteries between use at about 40% then charge them to 80% just before use as mentioned above. I am very happy with this purchase and it's met all of my expectations and past experiences I've had with this brand over the last 10+ years. I spent a great deal of time researching aftermarket batteries before purchasing this brand. And after taking over 1 million clicks during the last 10 years I am very happy with Wasabi's performance. I highly recommend them based on my experiences.

Edge of battery hangs out a little bit. Fit is not perfect but it works fine. Great for a backup battery but I wouldn’t trust the weather sealing in extreme environments.

I read here reviews that this battery did not work in the Canon R3, and I thought maybe Canon did something anti-consumer and locked the camera to only allow OEM batteries. I bought one anyway to use this battery in my EOS 1D X II. Turns out, it worked perfectly in my R3. I photographed a lacrosse game with it, taking thousands of photos, and the battery indicator did not drop below the halfway mark. So if you have an R3, are worried it won't work, relax -- it works just fine.

Doesn't even charge on the dedicated Wasabi charger. Never worked.