Everyone knows that the D4V2 will run on 18650, 18500, and 18350. It will also run on 16340 (RCR123A) and, in a pinch, a CR123A without any type of spacer. : r/flashlight
CR123A and rechargeable substitutes
CR123A and rechargeable substitutes
Lithium 18350 Battery Equivalents and Replacements
Armytek 18350 Li-Ion 900 mAh | Armytek.fi
Amazon.com: Thyrm CellVault-5M Modular Battery Storage for CR123, 18650, 18350, CR2032 Batteries with Movable Inserts (Olive Drab), Made in USA : Health & Household