This article says 200 km (124 miles):
https://electrek.co/2018/12/10/elect...idium-e-mobil/
This one also says 200 km:
https://insideevs.com/iridium-e-mobi...ric-motorhome/
This one says 300 km (186 miles):
https://newatlas.com/iridium-electric-motorhome/58270/
Note the date (the other two were from December and this one is from yesterday..hmm).
The last article also shows the battery size: 106 kWh Lithium Phosphate--interesting choice. The ones used in cars have a bit better power density than those.