See bold highlight:
Applies to: All Reolink POE NVRs and IP cameras( E1 Zoom is included) except for all Reolink battery-powered cameras, Reolink wifi nvr system, Reolink E1, Reolink E1 Pro, B400, D400, B800, D800, and Reolink Lumus
These are the cameras of discussion, solar battery models. They do not give the option as it is considered the wrong product to upload constantly, the battery would not last well.