According to the Canon website, "Despite having the same capacity [as the LP-E6NH], the LP-E6P has a higher maximum continuous discharge current of 6 A, allowing for higher performance and functionality" in the R5 II and newer cameras. There is no information as to whether battery life is better.

It works in my R5, which just came back from Canon service 2 weeks ago. I checked the firmware in the menu and it is 2.0.0. which was released March 26 2024. They probably updated the firmware while they had it in service

I think people aren't quite taking the time on this. I am holding an LP-E6P battery in my hands, and I also have the paperwork that came with the battery (I bought four extra batteries for the new R5 Mark II). I also have an LP-E6NH battery here too. I am not sure of the subtle differences between the LP-E6NH and the LP-E6P. The batteries are both marked as follows: Rated Voltage: 7.2V Battery Capacity: 2130mAh Both have a marking of 16 Wh (FWIW, 7.2V * 2.130 Hh = 15.34 Wh) I don't have charging specs for the older LP-E6NH (although on online search again came up with (almost) the same specs), but the paperwork with the LP-6EP states: Standard Charging Voltage: 8.4V, Standard Charging Current: 1200mA, Maximum Charging Voltage: 8.46 (to be clear, the web search I did for the E6NH said only 8.4V) Maximum Charging Current: 1300mA If you do a web search for "equivalent circuit" of a Lithium-Ion battery, you'll find that they have an ohmic resistance that is effectively a series resistance to the battery (call this R1). But there's also another resistance is series with the first, but with a capacitor in parallel with it (call these R2 and C1). R2 and C1 are part of the transient response of the battery. I'm guessing, but it's likely that the E6P has lower values for R2 and C1 which improve the battery's response to transients, and I'll bet the R5 Mark II (and other cameras that require the E6P) has higher dynamic loads that it puts on the battery, and thus the new battery. I hope this clears things up a little.

Yes, your current charger should be able to charge the Canon LP-E6P Lithium-Ion Battery.

With a new firmware update in December, 2024, the Canon LP-E6P Lithium-Ion Battery will enable the EOS R5 C to record 8K 60P internally, without the need for an external power supply.

The Canon LP-E6P Lithium-Ion Battery has a 1865mAh.

The Canon LP-E6P Lithium-Ion Battery is compatible with the R5 assuming you have the latest firmware. However according to Canon, there is no significant benefit over the LP-E6NH other than more power output which the R5 does not need.

Yes. The Canon LP-E6P battery uses the same charger as the LP-E6NH battery.