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Nitecore NL1829RLTP Cold Resistant USB Rechargeable Battery

1 review
Save $8.00 Save $8.00
Original price $46.00
Original price $46.00 - Original price $46.00
Original price $46.00
Current price $38.00
$38.00 - $38.00
Current price $38.00
Low stock


Nitecore NL1829RLTP - a new and unique battery with built-in micro-USB and the ability to charge from a USB cable (without a charger) and resistant to low temperatures to -40 ° C.

Also, when the battery was created, full testing was carried out under extreme conditions at temperatures of 0 ° C, -20 ° C and -40 ° C, but also with different discharge currents such as 580mAh, 1450mAh and 2900mAh. After the publication of the results, it was found that the NL1829RLTP is able to maintain its 89% temperature with a discharge current of 580mAh. In extremely cold conditions this battery will not work at full capacity. Therefore, it is recommended to use it inside electronic devices and most importantly at low power with possible circumstances.



The presented battery has a capacity of 2900mAh standard for lithium-ion batteries overall dimensions, allowing it to be used as the main battery for lights and other devices running on this type of battery 18650. Thanks to the special protective properties both internal and external,  in which the battery is fully protected from unforeseen situations. A sufficiently small overall size of the battery has built-in internal protection, which includes technology that protects the battery from short circuits. Also, a huge advantage is a built-in card, which response to the temperature rise of the battery, thereby by means of the chip reduces the output current in order to reduce the temperature of the battery case. To prevent damage to the internal parts of the presented battery, Nitecore engineers of the company provided in the inner part of the placement of the microporous barrier to protect internal components.

Externally NL1829RLTP also has protective properties. Equipped with gold-plated contacts made of stainless steel, which provides high impact resistance, good electrical conductivity, and thus provides excellent shock resistance. The outer layer is made of durable metal wrapper that protects the battery from abrasion.

NL1829RLTP provides 500 full cycles of discharge and charge that replace the 500 pairs of batteries size CR123, making it more environmentally friendly. Also for the standard dimensions, the presented battery is compatible with the majority of lighting fixtures operating on the battery size is 18650.



The main advantage of the new in his series of lithium-ion batteries is the battery with the ability to charge via the integrated Micro-USB port. Represented the port located on the side of the battery side with positive polarity. Because there is a charging port, the battery is included and displays the charge status, which is feasible with two different colors of LEDs, which are located on the side of positive polarity near the micro-USB port.

The display is as follows:

  • When the red led is illuminated, respectively indicate that the status of the charging process
  • When green indicator lights, indicating the corresponding status achieve a full battery charge

Thanks to the introduction of lithium-ion battery universal application micro-USB port, the level of practical use, and most importantly in the method of charging with the USB cable the user can connect the battery to any power source and charge without any special equipment, such as chargers, occupying a certain volume of space in a backpack or bag.


  • To carry out the exposure of the battery exposure to water and fire
  • In the implementation of the charging process in the battery charger make sure that it is properly installed regarding the polarity positive (+) and negative (-)
  • With prolonged use recommended charging process every three months, in order to prolong its service life



  • Ideal for devices with high power consumption
  • Designed to perform more than 500 cycles of charge-discharge
  • The battery pack comes in individual original packaging from the company Nitecore
  • The microporous inner layer protects the fragile internal components from damage
  • Gold Plated pins made from high-quality stainless steel
  • Built-in micro USB port

Designed to drive electronic devices in low-temperature environments event at -40C.  The micro-USB charging ensures maximum ease of use with an integrated charging power indicator.  The internal safety feature of the Nitecore NL1829RLTP is impressive.  It has an integrated smart charging circuitry in the anode that protects against overcharge, over-discharge, and short circuits.  A pressure relief valve protection that activates in the event of a rapid temperature increase. A built-in PTC inhibiting high current surges and microporous barriers protect the delicate internal components.


  • Type: NL1829RLTP
  • Capacity: 2900mAh
  • Voltage: 3.6V
  • USB Charging current: 720mA MAX
  • Continuous discharge current: 5A MAX
  • Weight: 46.8g
  • Length: 70mm
  • Diameter: 18.5mm
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I purchased this from Flashlight World along with several other items back in Nov 2018. Now , more than 6 months later I feel ready to give a qualified review. I used it in my worklight (Nitecore HC50) for several weeks where it got several hrs a day of run time , probably totaling over 100hrs. During this time it was drained close to empty a few times and partially drained several times. I charged it with both my Fenix ARE-C1 smart charger and I also charged it at work with the USB port from a Power Bank. Only once did I leave it out intentionally in extreme cold. After several hours out on the deck in a stiff wind at -29°C it worked as expected, it would not run my 900 lumen Fenix FD41 at boost or high , but did run it at low and medium. I then left it on, set to low, for 2 hrs in the cold and it was still running when I brought it in. I let the battery return to room temp before recharging. I have come to trust this battery and it now lives in my emergency gear bag in my vehicle , year round. It has performed to expectations in every way. I have not done any scientific capacity tests , but owning and using several 18650's in various capacities almost everyday , it seems to last very close to the same as my Samsung 3000mah, less than my 2 Fenix 3500mah and considerably more than my 6 Samsung 1500mah. NO REGRETS!!! , I will buy another soon!

Scot S.