One 21700 cell that charges off any USB-C cable and runs your light all night.
A 5000mAh 21700 Li-ion battery with a built-in USB-C port, full protection circuitry and the runtime to keep a high-drain torch or headlamp going.
- 5000mAh capacity for long runtime in high-output lights
- Built-in USB-C port charges the cell directly, no external charger needed
- 5A maximum continuous discharge for high-drain flashlights and headlamps
- Protected against overcharge, over-discharge and short circuit
- Nickel-plated stainless steel connectors for solid contact
- Standard 21700 size: 21.6mm diameter, 75.2mm length, 73g
Charge it with the cable already in your bag.
The NL2150R has a USB-C port built into the cell, so you charge it straight from a phone charger, a laptop or a power bank. A small indicator glows red while it charges and turns green when it is full, so you know at a glance when it is ready to go back in the light.
You can still top it up in a traditional charger when you prefer. It works with the Nitecore UI1, UI2, UMS2 and UMS4, so it slots into the charging kit you already own.
5000mAh that keeps high-drain lights running.
High-output torches and headlamps pull hard on a battery, and a tired cell fades fast on turbo. The NL2150R holds 5000mAh and delivers up to 5A continuous, so it feeds a demanding light without sagging and gives you noticeably longer runtime between charges.
It is a standard 21700 at 21.6mm by 75.2mm, so it drops into any light built for the 21700 format and replaces a worn cell that no longer holds its charge.
Built with the safety circuitry your gear deserves.
Your light and your hands are only as safe as the cell inside, so the NL2150R carries the protection Nitecore is known for. Built-in safeguards guard against overcharging, over-discharging and short circuits, and a pressure relief valve plus a high-temperature-resistant design manage the cell if things get hot.
The result is a battery you can trust in an everyday torch or a kit you depend on, with nickel-plated stainless steel connectors that resist impact and oxidation for a reliable contact over time.
WHY THE NL2150R OVER AN ORDINARY 21700
Charges off any USB-C cable
The port is built into the cell, so you top it up from a phone charger or power bank, where a bare cell needs a separate charger.
Full protection circuitry
Overcharge, over-discharge and short-circuit safeguards protect your light and the cell, where an unprotected cell leaves you exposed.
5000mAh of real capacity
A high-density 5000mAh cell delivers the long runtime a high-output light demands, instead of fading early on turbo.
Quality you can trust
Nickel-plated stainless steel connectors and a high-temperature-resistant design from a brand built on reliable Li-ion cells.
WHERE THE NL2150R EARNS ITS KEEP
High-Output Torches
Feeds a high-drain 21700 flashlight on turbo with the capacity for long, steady runtime.
Headlamps
Keeps a 21700 headlamp going through a night shift or a long trail, then charges off any USB-C cable.
Everyday Carry
A protected spare you can recharge anywhere, so your daily light is always ready to go.
Outdoors & Prep
A reliable, high-capacity cell for camping, hiking and a kit you want to count on.
SPECIFICATIONS
| Type | 21700 Li-ion (rechargeable) |
| Capacity | 5000mAh |
| Voltage | 3.6V |
| Max Continuous Discharge | 5A |
| Charging | Built-in USB-C port (red / green charge indicator) |
| Connectors | Nickel-plated stainless steel |
| Diameter | 21.6mm |
| Length | 75.2mm |
| Weight | 73g |
Protection
Overcharge, over-discharge and short-circuit protection, with a pressure relief valve and high-temperature-resistant design.Compatible Chargers
Charges in-cell over USB-C, or in a Nitecore UI1, UI2, UMS2 or UMS4 charger.FREQUENTLY ASKED QUESTIONS
Which lights does it fit?
The NL2150R is a standard 21700 cell at 21.6mm diameter and 75.2mm length, so it fits any flashlight or headlamp built for the 21700 format. It is a strong match for high-output lights that draw heavily on the battery, where its 5000mAh capacity and 5A continuous discharge keep them running.
How do I charge it?
Plug a USB-C cable straight into the port on the cell, from a phone charger, laptop or power bank. The indicator glows red while charging and turns green when it is full. You can also charge it in a Nitecore UI1, UI2, UMS2 or UMS4 charger if you prefer.
Is it a protected cell?
Yes. The NL2150R has built-in protection against overcharging, over-discharging and short circuits, plus a pressure relief valve and a high-temperature-resistant design, so it is safe to use in the gear you depend on.
What's In The Box
- 1× Nitecore NL2150R 21700 5000mAh USB-C Rechargeable Battery
More runtime, charged off any USB-C cable.
GET YOUR NL2150R NOWYou’re Backed by Our 60-Day Ironclad Guarantee
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Try it for 60 days. If it’s not right for you, send it back.
We stand behind our gear. If you’re not happy with your purchase, just return the full package within 60 days and we’ll issue a full refund—no fuss, no forms, no hoops to jump through.
What Happens After You Order
- You’ll get an instant order confirmation email with your receipt.
- We’ll pack your order the next working day and send you a tracking number once it’s on the way.
- From the moment you order to the moment it reaches your hands, we’re here to keep you updated and supported.
When will I receive my gear?
- Singapore: Delivered to your doorstep in 4–6 working days.
- International: Arrive within 10–14 working days.
Returns and warranty
- Every product comes with a 1 to 3-year replacement warranty (depending on the item).
- If anything isn’t working right, just let us know. We’ll make it right.
FREE Gift with Purchase: Limited Edition Ember Shard Whistle
Spend $99 or more today, and we'll automatically include a limited-edition Glow-in-the-Dark Ember Shard Whistle when packing your order.
Charge it quickly under sunlight or your flashlight, and enjoy its subtle glow throughout the night—perfect for marking gear, emergency kits, or attaching to your bag.
Limited quantities. These will be swapped (at our discretion) to other gift items if shards are unavailable.
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