Argus 31.5mm push on adapter ring. No retaining ring. | eBay
1-Pack Solar Panel for Ring Camera Compatible with Ring Spotlight Cam Battery, Ring Stick Up Cam Battery & Reolink Argus Pro with Weatherproof Micro USB Connector - Walmart.com
Amazon.com : Solar Panel for Ring Spotlight & Stick Up Camera, Reolink Argus Pro, 2 Pack Green Energy Rotatable Solar Panel Outdoor Charger for Ring Security Camera, 5V, 2.4W, 480mAH(Black) : Patio,
Wasserstein Solar Panel Compatible with Ring Spotlight Cam Battery, Ring Stick Up Cam Battery and Reolink Argus Pro (2 Pack, White) 4897080227412 - The Home Depot