Nitecore NL1834R – 3400mAh Protected 18650 Battery with Built-in USB Charging
The Nitecore NL1834R is a 3400mAh 3.7V protected 18650 lithium-ion rechargeable battery with a built-in micro-USB charging port, so it recharges from any standard USB power source without a separate charger. A status LED under the positive terminal glows red while charging and turns green when the Nitecore NL1834R is full. It can still be charged in an external charger if you prefer.
Built for high-drain gear — high-output flashlights, lanterns, headlamps and bike lights — the Nitecore NL1834R combines the runtime of a high-capacity rechargeable 18650 battery with the convenience of USB charging.
Specifications
| Model |
Nitecore NL1834R |
| Chemistry |
Lithium-ion (Li-ion), rechargeable |
| Size |
18650 (protected, button top) |
| Capacity |
3400mAh |
| Nominal Voltage |
3.7V |
| Output |
12.24Wh |
| USB Charging Voltage |
5V |
| USB Charging Current |
800mA (maximum) |
| Charging Port |
Built-in micro-USB |
| Protection |
Internal PCB — under-voltage cutoff 2.5V, over-voltage cutoff 4.25V |
| Cycle Life |
500+ charge/discharge cycles |
| Length |
2.68" (68mm) |
| Diameter |
0.72" (18.3mm) |
| Weight |
1.52 oz (47.3g) |
| Safety |
Microporous barrier and pressure release valve |
| Warranty |
12 months |
Frequently Asked Questions
How do you charge the Nitecore NL1834R?
The Nitecore NL1834R has a built-in micro-USB charging port on the cell itself. Plug a standard micro-USB cable (sold separately) into any USB power source — wall adapter, power bank or laptop — and the indicator under the positive terminal turns from red to green when the Nitecore NL1834R is fully charged.
Does the Nitecore NL1834R come with a charging cable?
No. The Nitecore NL1834R ships as the battery only; a micro-USB cable is sold separately. Any standard micro-USB cable you already own will charge the Nitecore NL1834R.
Can the Nitecore NL1834R be charged in an external charger?
Yes. The built-in USB port is a convenience, not a restriction — the Nitecore NL1834R can also be charged in any external Li-ion charger that accepts protected 18650 cells, such as the Nitecore UI1, UI2 or Intellicharger series.
Is the Nitecore NL1834R a protected 18650 battery?
Yes. The Nitecore NL1834R uses an internal PCB protection circuit that prevents under-voltage below 2.5V and over-voltage above 4.25V, plus a microporous barrier and pressure release valve to guard against rapid expansion.
Will the Nitecore NL1834R fit my flashlight?
The Nitecore NL1834R measures 2.68" (68mm) long and 0.72" (18.3mm) in diameter and weighs 1.52 oz. Because it is a protected button-top cell with an integrated charging port it runs slightly longer than an unprotected flat-top 18650, so check the battery tube length on very compact lights before ordering.
What devices is the Nitecore NL1834R designed for?
The Nitecore NL1834R is built for high-drain devices — high-output LED flashlights, lanterns, headlamps, bike lights and other appliances that take a button-top 18650 cell.
Where can I buy the Nitecore NL1834R?
You can buy the Nitecore NL1834R 3400mAh USB rechargeable 18650 battery here at Going Gear, an authorized Nitecore dealer, so every cell is genuine Nitecore stock covered by the manufacturer's warranty.
