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Nitecore NL166 RCR123A Li-ion Rechargeable Battery

3 reviews
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Original price $16.00
Current price $11.00


High performance rechargeable RCR123A battery from Nitecore specially designed for high drain devices like the Nitecore EC11 and other high power LED search light and tactical flashlights.

NL166 High-Performance Six Hundred Fifty Milliamperes Li-ion Rechargeable Battery

Purpose-designed for high-performance equipment. A safe, environmentally-friendly, high-performance RCR123 cell.

Internal Safety Features

  • Microporous barrier protects delicate internal components
  • Pressure relief valve activates in the event if a rapid temperature increase
  • Built-in PTC to inhibit high current surges
  • Innovative anode design with high temperature resistance

External Safety Features

  • Equipped at both ends with a nickel-plated S.S protector ensuring high impact resistance, good electrical conductivity and oxidation resistance
  • Tough plastic circuit board protector
  • Coated with durable metallic film to guard against abrasion

Purpose-Designed High-Performance Protected Circuit

  • Automatically protects against overcharge, over discharge and short-circuiting
  • Utilizes a high-quality battery protection IC from Seiko Instruments Japan
  • Utilizes high-power MOS-FEE in the current regulation module for better efficiency and superior output

High Capacity and High Performance

Actual measured capacity is approximately 650mAh and a high output current of up to 4A makes NL166 compatible with various kinds of high-drain devices.

Standard Button Size Positive End

Positive end is a standard button size allowing maximum equipment compatibility.

Low Cost and Environmentally Friendly

A NL166 battery can be recharged over 500 times, the equivalent of 500xCR123 batteries


  • Maximum continuous discharge current: 6.5A
  • Capacity: 650mAh
  • Voltage: 3.7V
  • 2.4 Wh


Customer Reviews
4.7 Based on 3 Reviews
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Fits great will be nice not worrying about dead batters on vacation now.

Ryan P.

I bought 2 batteries and one was defective. Flashlight World immediately sent a replacement. Fast and excellent service.

Joanne B.
Thomas W.