EPEver Modbus question

I have an EPEver 6415AN. I'm reading and parsing the modbus output. The status register, 3201. according to my specification is D3-2: Charging status. 00 No charging,01 Float,02 Boost, 03 Equalization. but I'm getting 04.
My specification is V2.3 2015. Does anyone have a link to a newer specification or know what 04 stands for?
Thanks.

Update: Error in my logic. The value of 4 is actually bit 2 high.