To gain a better feel for battery life and charging data will take more time but I thought a first impressions review for this new product would be helpful.
The batteries arrived only partially charged so, as is good practice, I inserted both batteries in the charger to get a full charge. Of note, this kit comes with a USB-A to Micro-USB but does not include a power brick so you'll need to provide your own. Any USB adapter should work. Charging of both batteries to full required approximately 3 hours from the partial charge state I received them in. Both the batteries and charger appear to be of high quality and construction.
I have a Canon EOS 5D Mk IV and used this camera to test the batteries. Full disclosure: I did not fully discharge the batteries to determine how many shots were achieved. The batteries fit perfectly in the camera, as well as the original batteries do. The camera identifies the battery as a LP-E6NH and allows the battery to be registered if desired.
I've taken a few hundred shots with the batteries. Battery consumption in my 5D Mk IV appears to be around 4% per 100 shots. However, this number may vary widely depending the camera and lens being used and other factors including ambient temperature. I did not test battery consumption recording video but I plan to update this review at a later date when I've been able to gather more usage data.
Meanwhile, I do recommend this product.