The double charger is very small (90 x 55 x 20 mm) and therefore does not take up much space in a camera bag. It's also incredibly light at just 45g, which I really appreciate. Conveniently, it has connectors for both Micro-USB and USB-C cables, so you can use both, although I suspect faster, higher-current charging will be possible via USB-C provided you plug it into one for that suitable socket adapter for fast charging.

The batteries themselves work great in my Canon R6. The only complaint I have is that unlike other LP-E6 batteries I've owned, they don't come with plastic covers to protect the battery terminals when not in use. For this reason I would recommend keeping them in some sort of storage case rather than stashing them loosely in a camera bag where a metal object could potentially short out the battery and cause a fire. I think the chances of that happening are pretty slim, but it's worth noting.

I haven't had the batteries long enough to comment on their long term performance. Many cheaper third-party batteries can only hold a decent charge when new and then lose power much more quickly than Canon's original batteries. If you were to look through these reviews at some point in the future when there are more of them, I would look for some written by people who have used these batteries for an extended period of time.