Full disclosure - I received this product as a member of the Amazon VINES review program. The comments and opinions are based on my knowledge of similar products and experience using the product listed.

Owning an Canon 6D Mark II DSLR, I find that the batteries last for a long while. Recently I took out the camera to shoot a few quick shots and found the battery installed was dead. Luckily, I had a spare that was charged fully and swap them out and back in business. I got to thinking that if I happened to be out shooting some pictures and could not get back to recharge my current 2 batteries, I might be left without. I saw these and thought there is my answer. These batteries are the LP-E6N(H) type which is heavy duty and are rated at 2250mAh power capacity which should provide a longer battery life. They can be charged by several methods: using an AC battery charger or an automobile DC charger compatible with the battery model or via a USB-C cable from a battery bank or wall charger. Each battery has its own individual charging indicator and a removable safety cover to prevent accidental discharging should the battery be placed into say a pants pocket with loose change, etc. They fit easily into the Canon 6D Mark II, and the camera menu recognizes the battery as a LP-E6N type.