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Four clear plastic AAA battery holders with black end caps and four black 18650 battery sleeves

Unique-Bargains

Unique-Bargains AAA Battery 3x1.5V Storage Adapter Case 18650 Battery Holder Converter 4 Set

SKU CH-S4VQ-0Q1NZ

Holds three AAA cells in series for 4.5V output and includes four 18650 sleeves to prevent rattling in flashlights

  • TypeBattery Converter
  • Converts three AAA cells into a 4.5 V power source for flashlights
  • 5 mm diameter sleeve adapts 18650 batteries to larger flashlight bays
  • Prevents battery rattle and protects flashlight interior walls from impact
  • Clear and black plastic construction supplied as a four-piece set
  • 5 mm and 64 mm lengths suit common flashlight battery compartments

AAA Battery Adapter Kit

This set provides four clear-and-black plastic holders that connect three AAA cells in series to deliver 4.5 V, matching the length of an 18650 cell at 61.5 mm or 64 mm overall. Each holder measures 21.5 mm in diameter and 2.42 inches long, letting flashlights designed for 18650 batteries accept standard AAA alkalines instead. Four loose 18650-size sleeve tubes are also included to centre a single 18650 inside the same flashlight body.

Flashlight owners needing flexible power

The adapters suit anyone who wants to run a light on readily available AAA cells when 18650 rechargeables are not at hand, while the sleeves keep a lone 18650 from rattling in a larger tube. Users whose lights only accept a single AAA or require a different voltage should look elsewhere, as will anyone needing a charger or the batteries themselves.

4.5 V series output from three AAA cells

The defining specification is the series connection of three 1.5 V AAA batteries to produce 4.5 V, matching the nominal voltage of one 18650 cell. This voltage equivalence lets the holder replace an 18650 in compatible flashlights without altering brightness or runtime.

Highlights

  • Converts three AAA cells into a 4.5 V power source for flashlights
  • 5 mm diameter sleeve adapts 18650 batteries to larger flashlight bays
  • Prevents battery rattle and protects flashlight interior walls from impact
  • Clear and black plastic construction supplied as a four-piece set
  • 5 mm and 64 mm lengths suit common flashlight battery compartments

Specifications

BrandUnique Bargains
TypeBattery Converter

Questions about this item

Will the 4.5 V output from three AAA cells work in my flashlight that normally takes an 18650?

Yes, three AAA cells in series provide 4.5 V, which matches the voltage range many 18650 flashlights expect.

How can I confirm the adapter is making proper contact after I insert the cells?

The flashlight should power on at full brightness without flickering when the tail cap is tightened.

Does the 4-pack include both the 21.5 mm AAA holders and the 18650 sleeve tubes, or must I buy the sleeves separately?

The set contains four AAA battery holders and four 18650 sleeve tubes; nothing else is required.

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