A PoE injector or switch can power Reolink cameras which then enables you to use a single network cable for both video and power transmission.
reolink QSG 1080p Outdoor Battery Camera User Guide
LINOVISION Mini Passive 2 Port PoE Extender with Local Camera Output Over Ethernet Over Cat5/6 Cable
GSMzone Sheffield
Use Network Switches to Install More than 2 PoE IP Cameras over 100 Meters#1
reolink QSG 1080p Outdoor Battery Camera User Guide
Which Cable For CCTV POE Security Systems - GSMzone
POE Over Coax EOC Converter with Mini Passive 2 Port POE Extender
Efficient Transmission: This PoE injector is the perfect solution to expand your network by converting non-PoE Gigabit ports into PoE+ Gigabit ports.
Reolink Gigabit PoE Injector, Convert Non-PoE to PoE, Supplies PoE+ (30W) or PoE (15.4W), Distance up to 100m, Plug & Play, Suitable for Reolink PoE
reolink QSG 1080p Outdoor Battery Camera User Guide
How To Set Up PoE Relink NVR With Monitor Connected - GSMzone
GSMzone Sheffield