The Nitecore NL1835LTHP is a high-performance 18650 rechargeable Li-ion battery specifically engineered to operate efficiently and reliably in extremely cold temperatures, down to -40°C (-40°F). It's a "Low Temperature High Performance" (LTHP) variant, building on Nitecore's reputation for advanced battery technology.
Here's a detailed description:
Core Specifications:
Battery Type: 18650 Li-ion rechargeable battery. This is a very common size for flashlights, headlamps, and other portable electronics.
Capacity: 3500mAh (milliampere-hours). This is a high capacity for an 18650 battery, providing extended runtimes.
Voltage: 3.6V (Nominal).
Continuous Discharge Current: 8A MAX. This makes it a high-drain battery, capable of powering high-lumen flashlights and other devices that require a significant power draw.
Dimensions: Approximately 69.3mm (length) x 18.7mm (diameter). It's a button-top battery, meaning it has a raised positive terminal, ensuring compatibility with most devices designed for button-top 18650s. It's important to note that protected 18650 batteries like this one are slightly longer than unprotected cells due to the built-in protection circuit.
Weight: Around 49 grams.
Key Differentiating Feature: Low-Temperature Performance (LTHP):
This is the standout characteristic of the NL1835LTHP:
Exceptional Cold Weather Efficiency: Nitecore designed this battery to maintain an outstanding performance even at -40°C (-40°F). It significantly surpasses the discharge efficiency of conventional Li-ion batteries at such low temperatures. This is crucial because standard Li-ion batteries experience a drastic drop in voltage and capacity, often failing entirely, when exposed to extreme cold.
Ideal for Harsh Climates: This makes it an indispensable power source for equipment used in very cold environments, such as during winter expeditions, high-altitude activities, tactical operations in freezing conditions, or just for reliable use in consistently cold regions.
Advanced Safety Features:
Nitecore integrates multiple layers of safety into its batteries to ensure reliable and secure operation:
Built-in Pressure Relief Valve: Activates in the event of a rapid temperature increase, preventing dangerous pressure buildup.
Microporous Barrier: Protects delicate internal components and enhances heat dissipation.
Built-in PTC (Positive Temperature Coefficient): Inhibits high current surges, protecting both the battery and the device from damage.
High-performance Protective Circuit Board (PCB): This integrated circuit provides comprehensive protection against:
Overcharging: Prevents the battery from being charged beyond its safe voltage limit.
Over-discharging: Prevents the battery from being drained too low, which can permanently damage the cell.
Short-circuiting: Guards against damage from accidental short circuits.
Nickel-plated Stainless Steel Connectors: Located at both ends, these provide excellent impact resistance, superior electrical conductivity, and resistance against oxidation, ensuring consistent performance over time.
Durable Metallic Film Coating: Guards against abrasion and physical damage.
Tough Plastic Circuit Board Protector: Adds an additional layer of physical protection to the sensitive electronics.
Globally Insured and Certified: Provides an extra layer of assurance regarding its safety and quality standards.
Applications:
The NL1835LTHP is particularly well-suited for:
High-lumen 18650 flashlights and headlamps that need to operate reliably in cold weather (e.g., Nitecore HC65 V2, HC60 V2, HC33, MH23, EC23, Concept 1).
Outdoor adventurers participating in winter sports, cold-weather camping, mountaineering, or hunting in freezing conditions.
Professionals whose work takes them into cold environments (e.g., search and rescue, military, utility workers).
Any 18650-compatible device where consistent and reliable power in low temperatures is critical.
In summary, the Nitecore NL1835LTHP is a premium 18650 battery built for the most challenging cold environments, offering excellent capacity, high discharge rates, and robust safety features to ensure your electronic devices perform reliably when you need them most.
