Nitecore NL1834 (NL189) – 3400mAh High-Capacity Protected 18650 Rechargeable Battery
The Nitecore NL1834 (NL189) is a high-capacity 3400mAh 3.7V protected 18650 lithium-ion rechargeable battery designed specifically for high-drain devices — Nitecore TM-series search lights, high-output LED flashlights, tactical lights, headlamps and lanterns. Internal PCB protection cuts off at 2.5V under-voltage and 4.25V over-voltage, and the cell is rated for up to 500 charge/discharge cycles.
If you are shopping for a high-capacity rechargeable 18650 battery or a protected 18650 cell for a high-output flashlight, the Nitecore NL1834 (NL189) is the long-runtime option in Nitecore's 18650 line.
Specifications
| Model |
Nitecore NL1834 (NL189) |
| Chemistry |
Lithium-ion (Li-ion), rechargeable |
| Size |
18650 |
| Capacity |
3400mAh |
| Nominal Voltage |
3.7V |
| Protection |
Internal PCB — under-voltage cutoff 2.5V, over-voltage cutoff 4.25V |
| Cycle Life |
Up to 500 charge/discharge cycles |
| Dimensions |
L-2.73" x W-0.74" x H-0.74" |
| Weight |
1.70 oz |
| In the Box |
1 x Nitecore NL1834 (NL189) 18650 battery |
Frequently Asked Questions
What is the capacity of the Nitecore NL1834 (NL189)?
The Nitecore NL1834 (NL189) is rated at 3400mAh at a nominal 3.7V. That is the high-capacity end of the 18650 format and delivers noticeably longer runtime than a 2300mAh cell in the same flashlight.
Is the Nitecore NL1834 (NL189) a protected 18650 battery?
Yes. The Nitecore NL1834 (NL189) uses an internal PCB protection circuit that prevents under-voltage below 2.5V and over-voltage above 4.25V, making it suitable for lights and devices that require a protected 18650 cell.
Is the Nitecore NL1834 (NL189) good for high-drain flashlights?
Yes — the Nitecore NL1834 (NL189) is built for high-drain use and is Nitecore's recommended cell for TM-series search lights and other high-output LED and tactical flashlights that pull heavy current on turbo.
How many times can you recharge the Nitecore NL1834 (NL189)?
Nitecore rates the NL1834 (NL189) for up to 500 full charge and discharge cycles. Avoiding sustained heat and deep discharges will help the Nitecore NL1834 (NL189) hold capacity across its service life.
What charger works with the Nitecore NL1834 (NL189)?
The Nitecore NL1834 (NL189) charges in any external Li-ion charger that accepts 18650 cells, including the Nitecore UI1 and UI2 USB chargers and the Nitecore Intellicharger series, or in-light on flashlights with built-in charging.
What are the dimensions of the Nitecore NL1834 (NL189)?
The Nitecore NL1834 (NL189) measures L-2.73" x W-0.74" x H-0.74" and weighs 1.70 oz. As a protected button-top cell it runs slightly longer than a flat-top unprotected 18650, so confirm clearance in very compact lights.
Where can I buy the Nitecore NL1834 (NL189)?
You can buy the Nitecore NL1834 (NL189) 3400mAh protected 18650 rechargeable battery here at Going Gear, an authorized Nitecore dealer, so you receive genuine Nitecore stock backed by the manufacturer's warranty.
