2 Cell Flashlight Adapter to 2S 18650
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An adapter for old flashlights to use 2 series 18650 Li-Ion batteries. This will only work for some flashlights.
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- Printables
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- Tools
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An adapter for old flashlights to use 2 series 18650 Li-Ion batteries. This will only work for some flashlights. Older models from stamped steel or older plastic housing with a removable end cap. Since 18650 batteries are longer than D-Cells your flashlight must have room for the longer batteries. If your flashlight has a removable endcap, the spring is usually long enough to allow this adapter to work. The tapered end works best towards the endcap, but your situation may vary. Light infill is all that is needed.