Range is somewhere between 350 and 600 km depending on conditions. Aerodynamics, weight, weather all have an influence as well as the battery size and efficiency of the specific model of truck. The guy on the youtube channel has driven most of the selection of currently available long haul electric trucks in Europe under a variety of conditions, so this seems fairly representative.
The trucks are all designed to be driven for the legally mandated maximum of 4.5 hours at highway speeds and to be recharged sufficiently in a 45 minute break to be able to do that again for another 4.5 hours. In particularly adverse conditions a little less driving time before recharging is possible but for an average load the currently available tech works just fine and it is mostly the charging infrastructure that limits adoption.
The trucks are all designed to be driven for the legally mandated maximum of 4.5 hours at highway speeds and to be recharged sufficiently in a 45 minute break to be able to do that again for another 4.5 hours. In particularly adverse conditions a little less driving time before recharging is possible but for an average load the currently available tech works just fine and it is mostly the charging infrastructure that limits adoption.