Any single battery alternative for the circular 3x AAA battery holders? : r/flashlight
Convert a 3xAAA Flashlight to a Lithium 18650 Cell : 9 Steps - Instructables
AAA Battery To 18650 Cell, Flashlight Conversion / Mod / Upgrade / DIY Project - YouTube
2pcs / Lot 3 Aaa Battery Black Plastic Metal Holder Box Housing Cylindrical Type For 18650 Flashlight 65mm * 21mm In Stock - Replacement Parts - AliExpress