Nitecore NL1816R 1600mAh 18350 USB-C Rechargeable Battery - 3A Li-ion MT1C Pro

The Nitecore NL1816R delivers 1600mAh at 3.6V (5.76Wh) in the compact 18350 format, with a continuous discharge current of 3A, purpose-built for the MT1C Pro and compatible USB-C devices. Its integrated USB-C charging port and LED indicator combine performance with everyday convenience. Engineered to Nitecore’s hallmark standards for rechargeable Li-ion batteries, the NL1816R is a reliable, long-lasting and cost-effective power solution.

Capacity and Performance

With 5.76Wh of energy and a 3A continuous discharge current, the NL1816R delivers consistent, reliable power for flashlights and demanding electronics. Its 1600mAh capacity provides 45% more runtime than standard 18350 batteries, significantly extending your MT1C Pro’s performance in the field. With more than 500 guaranteed recharge cycles, it represents a durable and economical alternative to disposable batteries.

Maximum Safety

The NL1816R features a built-in intelligent protection circuit guarding against overcharging, over-discharging and short circuits, complemented by a pressure relief valve that prevents hazards in case of anomaly. Its nickel-plated stainless steel casing resists impacts, ensures efficient conductivity and fends off oxidation. A durable metallic film coating further reinforces its resistance to abrasion. The NL1816R is engineered to fit the MT1C Pro perfectly, maximizing both brightness output and runtime.

Specifications

• Chemistry: Li-ion NMC 18350, protected
• Nominal capacity: 1600mAh at 3.6V (5.76Wh)
• Continuous discharge current: 3A
• Charging input: USB-C 5V ⏴ 1A
• Charging indicator: LED red (charging) / green (complete)
• Recharge cycles: 500+
• Built-in intelligent protection circuit
• Built-in pressure relief valve
• Casing: nickel-plated stainless steel
• Coating: durable metallic film (abrasion-resistant)
• Length: 1.61" ± 0.01" / 40.8mm ± 0.3mm
• Diameter: 0.73" ± 0.01" / 18.5mm ± 0.3mm
• Weight: 0.95oz / 27g
• Compatible with all Nitecore chargers

Box Contents

• 1 Nitecore NL1816R 18350 1600mAh Battery

Recommended Uses

• Primary battery for the Nitecore MT1C Pro flashlight
• Everyday carry (EDC) and tactical use
• Camping, hiking, and outdoor adventures
• Drop-in replacement for CR123A lithium cells in compatible devices
• All devices requiring an 18350 format battery
• Urban commute and travel (TSA-compliant when properly stored)
• Any application where compact size and high capacity are both required

FAQ

How long does the NL1816R last before needing replacement? With 500+ guaranteed recharge cycles, the NL1816R is designed for multi-year daily use. Proper storage (between 40–60% charge in a cool, dry place) further extends its service life.

Can I charge the NL1816R directly without an external charger? Yes. The NL1816R features an integrated USB-C port (5V⎓1A) for direct charging via any standard USB-C cable. For faster simultaneous charging of multiple batteries, a Nitecore multi-slot charger is recommended.

Is the NL1816R compatible with all Nitecore chargers? Yes, the NL1816R is fully compatible with all Nitecore chargers designed for the 18350 format, including the SC4, UMS4, and i4.

What is the difference between a protected and an unprotected 18350 battery? A protected battery like the NL1816R incorporates a built-in circuit that prevents overcharging, over-discharging, and short circuits. This makes it significantly safer for everyday use in flashlights and electronics, with no measurable performance penalty.

Can I travel with the NL1816R on a plane in Canada? Yes. The NL1816R (5.76Wh / 1600mAh at 3.6V) is well within the 100Wh per battery limit set by Transport Canada for carry-on luggage. Always keep batteries in your carry-on and store them in a protective case to prevent short circuits.