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Small white plastic charger with fold-out AC prongs for 16340 Li-Ion cells

Centenex Electronics

Centenex Electronics CHUNI-RCR123a_Charger AC 100-240V Li-Ion 16340

SKU CH-WYAM-EWY9X

Charges one RCR123a or 16340 lithium-ion cell from 100-240 V AC at 4.2 V 650 mA in a 33 x 16.4 mm adapter

  • TypeUniversal Charger
  • Charges RCR123a 16340 Li-ion cells safely
  • Worldwide AC 100-240 V 50/60 Hz input
  • Compact 33 x 16.4 mm design fits anywhere
  • DC 4.2 V 650 mAh output for proper charging
  • Strictly for rechargeable Li-ion — no non-rechargeable batteries

Purpose & Audience

This AC charger is built for RCR123a lithium-ion cells in the 16340 form factor. It suits drone pilots, RC hobbyists and makers who rely on rechargeable 16340 batteries and need a compact mains-powered charger.

Replacement & Upgrade

It replaces single-slot proprietary chargers that only accept one brand of cell. The jump is worth it if your current charger lacks universal 100-240V input or cannot deliver the 4.2V 650mAh output required by standard RCR123a packs.

Compatibility Check

Verify every cell is a rechargeable RCR123a Li-Ion type; non-rechargeable CR123A primaries must not be used. Confirm your mains supply falls within the 100-240V 50/60Hz range and that the 33 x 16.4mm charger footprint fits your workspace or travel kit.

Highlights

  • Charges RCR123a 16340 Li-ion cells safely
  • Worldwide AC 100-240 V 50/60 Hz input
  • Compact 33 x 16.4 mm design fits anywhere
  • DC 4.2 V 650 mAh output for proper charging
  • Strictly for rechargeable Li-ion — no non-rechargeable batteries

Specifications

BrandCentenex Electronics
ModelCHUNI-RCR123a_Charger
TypeUniversal Charger

Questions about this item

What size clearance does the 33 x 16.4 mm charger need at a wall socket?

The unit measures 33 by 16.4 mm, so allow that footprint plus cable bend radius at the outlet.

How do I insert the 16340 cell without reversing polarity?

Align the battery’s positive end with the charger’s marked + contact; the spring terminal takes the negative end.

When should I replace the RCR123a cell charged at 4.2 V 650 mAh?

Replace the 16340 when it no longer holds a full 4.2 V charge or shows reduced run-time in your device.

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