Parallel charging adapter for two 18650 / 18500 cells using XT-60 charger : r/functionalprint
Designed an 18650 to 2x D Cell adapter with charging for my Maglite. : r/flashlight
3D Printed Battery Adapters - Want to Sell - BudgetLightForum.com
YouMagine – 18650 Battery to 2 D Cell Adapter by BBrown1951 – YouMagine 📱
Amazon.com: Plastic 18650 Battery Storage Case 2 Slots x 3.7V for 2x18650 Batteries Holder Box Container with ON/Off Switch, Set of 5, by Ltvystore : Electronics
3D Printed 18650 to 2 D Cell Adapter by bil.brown1951 | Pinshape