Arctis pro wireless battery type?

Does anyone know the battery type or format for the Arctis Pro Wireless headset? Upon searching, I discovered that the Arctis Pro Wireless utilizes the NP-45 battery. This information is quite useful, as it is easier to find NP-45 batteries externally rather than purchasing replacement batteries directly from SteelSeries.

I'm curious if there's a designated name for the battery type or format used in the non-Pro version of the Arctis headset.