In 2026, rechargeable almost always means USB-C and a 18650 or 21700 cell. Runtime is better, and you stop buying alkaline packs. Keep a spare cell if the light lets you swap it.
Examples already on our radar:
- Wurkkos HD02 PRO — removable 21700 5,000 mAh, USB-C in the light. Official: Wurkkos. Amazon: confirm it is the PRO: search.
- Acebeam H18 — 6,400 mAh 21700 headlamp. Acebeam.
If you specifically do not want rechargeable, the Maglite ML300LX 2D still runs two D cells: Amazon.
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