In my experience, the technical side of these batteries is actually pretty interesting. To get that H+ high-speed icon on your R6, the camera basically needs to see a specific voltage and a decoded chip signal. If the cells cant handle the high discharge rate, the camera just throttles the frame rate... its kinda annoying tbh. Basically, you want a fully decoded battery so you dont get those communication errors or warnings. Swelling usually happens when internal resistance is too high and things overheat, so staying with brands that have decent quality control is key. I think the Neewer LP-E6NH USB-C Rechargeable Li-ion Battery 2250mAh is a really decent option. It supports USB-C in-camera charging and shows the percentage accurately. I've also been looking at the Wasabi Power LP-E6NH 2250mAh Battery 2-Pack which is a popular backup choice. I mean, I'm still learning the ropes with my R6, but I've read that those two seem pretty safe for the R series electronics. Just make sure the listing says it's for the R6 specifically or you might lose the high speed modes. Hope this helps! 👍

I've tried many, but SmallRig LP-E6NH USB-C Rechargeable Camera Battery is best because it supports H+ and USB-C charging perfectly. Lesson learned: dont risk your R6 with cheap, unbranded cells!

Would love to know this too

Was reading through this earlier and felt the need to chime in because I've seen some nasty stuff happen with off-brand power. Totally agree with Slleek, the heat issue is no joke. One thing people often overlook is how these batteries behave during long video clips or heavy burst sessions. If you're gonna go third party, my biggest warning is to watch out for those no-name bundles on big retail sites that come with a cheap plastic charger. Those chargers usually have terrible voltage regulation and can basically cook the battery's internal controller over time. Even if the battery seems okay at first, a bad charger can cause it to swell a few months down the line without you noticing until it gets stuck. Honestly, if you're doing a once-in-a-lifetime shoot, it's just not worth the risk imo. A jammed, swollen battery inside an R6 is a total nightmare to get out without damaging the casing. Basically, if the price seems way too good to be true, it probably is. Just be careful out there, some of those cheap cells are basically ticking time bombs for your electronics...

Honestly, I've been shooting with Canon gear for decades and the price of their batteries is always a bit of a shock. Switching to ProMaster stuff a while back for my R series setups was a great move and honestly im super happy with them. Just get any of their pro-level versions from a local shop. They work well, no complaints from me about the high speed shooting or anything. They basically feel just like the originals without the insane markup. Watson batteries from the big photo retailers have also been solid for me. They're super reliable and I havent had one swell on me yet in like five years of heavy use... Just stick to those bigger third-party names and you'll be fine, no need to overthink it.

100% agree

Just saw this. Like someone mentioned, the heat issue is the real deal-breaker. I’ve been shooting with the R system for years and im still pretty cautious with off-brand power. One thing to watch out for is that these batteries tend to lose their capacity way faster than the originals... like, they might work great for a few months then suddenly start dying at 20 percent. Personally, I would suggest hunting for used genuine batteries on gear sites instead of buying cheap new ones. TL;DR: Watch out for heat and maybe look for used original batteries if you want to save money without the risk.