Yo, congrats on the R7. Its a total beast for wildlife and sports, but yeah, Canons battery pricing is basically highway robbery. I have spent way too much time testing these because I hate seeing that could not communicate message when I am in the middle of a shoot. Be careful with the older LP-E6N clones you see for ten bucks. For the R7, if you want that full 15fps mechanical burst mode, look for the green icon in your EVF. The battery really needs to support the higher discharge rate of the NH spec. If you go too cheap, the camera will throttle your frame rate and youll be stuck at like 7fps, which kinda defeats the purpose of the R7 power tho. I would suggest looking at the SmallRig LP-E6NH USB-C Rechargeable Camera Battery 2400mAh. Its been pretty reliable for me and it actually communicates with the R7 logic board without that annoying popup most of the time. The built-in USB-C port is a massive win when youre traveling since you dont need a separate brick. Quick tip: make sure you dont leave third party batteries in the charger for days on end. Some of those budget chargers dont have the same overcharge protection as the OEM ones, and thats usually when the swelling starts. If you want a cheaper non-USB option, the BM Premium LP-E6NH High Capacity Battery 2600mAh usually works, but it can run a bit hot if youre shooting 4K60 video for long stretches.

Checked back on this thread and honestly the guys above nailed the main points about avoiding the cheap stuff that swells up. If you want a really solid middle ground, Ive been very happy with the SmallRig LP-E6NH USB-C Rechargeable Camera Battery 2400mAh. The best part is the built-in USB-C port so you dont even need a dedicated charger in your bag... total game changer for travel. If you want something that feels a bit more like a traditional battery, the Watson LP-E6NH Li-Ion Battery Pack 7.2V 2250mAh is my go-to. It costs a bit more than the BM ones mentioned earlier but theyve been super reliable for me over long shoots. Both of these show the battery life and keep that high-speed burst active without the nag screens. TL;DR: Grab the SmallRig if you want to charge via USB-C or the Watson for a more premium third-party feel. Both beat paying eighty bucks to Canon tho.

TL;DR: Grab the BM Premium LP-E6NH 2-Pack with LCD Dual Charger if you are on a budget. Unlike some cheaper clones, these actually trigger the H+ high-speed burst icon on the R7 display. They usually come in around thirty bucks for two, which is insane compared to Canon prices. Just keep an eye on them during charging, but they have been solid for me during long birding trips.