Bosch smart plugs not reporting power consumption via z2m

Hi

I have recently purchased Bosch smart power plugs and have them integrated with zigbee2mqtt. The on/off switching works reliably and they also act as a zigbee router just fine.

However, they do not report current power draw in watts. Neither does cumulative energy metering in kWh show/work. I want to log the time series of my main appliances’ energy profile, but it appears to not be supported out of the box. Ist there something I need to configure? Latest firmware btw.

On Z2M GitHub there are some suggested changes to its database to fetch the information for Power and (sum of) Energy usage, which seem to work for me (without the ‘External converter’ in HA). Not covered are Current and Voltage readings.
Bosch Plug Compact BSP-FZ2 #13069