They are rated at 2000 mAh vs. OEM lp-e6n 1865 mAh vs. lp-e6nh 2130 mAh. Quite frankly, the duration between the OEM lp-e6n and lp-e6nh in the field are measurably different though not appreciably. I've found the RavPower lasted longer than the OEM lp-e6n when new, but the performance declined fairly rapidly and they are now inferior. Also, I don't know if they will support H++ in ms mode.
How long did you use the Ravpower ones before you notice the performance declining?
Do you think it's still worth the price?
I can get the ravpower batteries 5 times cheaper than the original canon ones, as long as it doesn't deteriorate 5 times faster than the canon ones I think I may get it.
That's an interesting question. With the 5dmkiv, the batteries didn't perform as well and I am guessing that's because I was using the GPS. They surpassed the original lp-e6n's for perhaps 3-4 charges and then didn't perform as well. On my R5 they seem to do a bit better and are close to the OEM lp-e6n's. I haven't done a formal testing in terms of shots/current draw but may do so.
Ran an informal test today. The RAV power batteries are two years old, and were in cycle with six other batteries for my 5dmkiv's. Both batteries indicate "3 bars" with respect to health compared to the 2 bars for the lp-e6n's which came with the 5dmkiv's. As I mentioned, there is a difference between the lp-e6n and lp-e6nh in the field but is it 14% more as the specs indicate? Probably, though functionally, the 10-14% greater duration of the lp-e6nh is hardly worth the cost difference.
On to the test. I charged all of the batteries until full in their respective chargers. It was a cold morning (40's F) so that impacts battery life. The batteries were used in an R5 connected to long Canon EF lens via a Canon adapter using IS/IBIS and the EVF. The camera was left "on" all of the time and enters sleep mode during the default time period. I tend to occasionally review series in the EVF and delete in camera if the action slows. The lp-e6nh was up first and I achieved a little over 600 shots before the red blinking light. The lp-e6n yielded approximately 538 before giving out. The RAV batteries were in the camera (again reading 100% and 3 bars) and were indicated depleted after 15" of use, and perhaps 20-30 shots a piece. Clearly, the cells are shot though the internal electronics (read chip) still says their good.
So , what's my take on the RAV power cells? As I mentioned, they surpassed OEM lp-e6n's when new, but now that they're two years old, they are shot compared to a six + year old OEM lp-e6n battery. With lp-e6n's retailing for around $40-50 versus the lp-e6nh's $80 and the RAV batteries/charger for around $50, I say go with the OEM lp-e6n unless you want the RAV for the charger.