BATTERY RECH. 21700 4200MAH/NL2142LTP NITECORE

Description:

The Nitecore NL2142LTP is a specialized, high-performance 21700 rechargeable Li-ion battery designed specifically to excel in extreme cold weather conditions. Unlike conventional Li-ion batteries that significantly lose efficiency and capacity in freezing temperatures, the NL2142LTP is engineered to maintain strong performance even down to -40°F (-40°C).

Here's a breakdown of its key features:

Core Specifications:

• Battery Type: 21700 Li-ion rechargeable battery. This form factor is larger and generally offers higher capacity and discharge rates than the older 18650 format.

• Capacity: 4200mAh (milliampere-hours). This is a respectable capacity for a 21700 battery, providing a good balance of runtime and performance.

• Voltage: 3.6V (Nominal).

• Continuous Discharge Current: 8A MAX. This indicates it's a high-drain battery, suitable for powering high-lumen flashlights, headlamps, and other demanding electronic devices.

• Dimensions: Approximately 74.6mm (length) x 22.3mm (diameter). It's a button-top battery, which means it has a raised positive terminal, making it compatible with most devices designed for button-top 21700s.

• Weight: Around 47 grams.

Key Differentiating Feature: Low-Temperature Performance (LTP):

The "LTP" in its model name signifies its "Low Temperature Performance." This is the battery's standout characteristic:

• Exceptional Cold Weather Efficiency: Nitecore claims it more than doubles the typical 21700 battery discharge efficiency at -40°F (-40°C). It can retain approximately 76% of its capacity at -40°C, which is significantly better than standard Li-ion batteries that would see a drastic drop in performance or even cease to function at such low temperatures.

• Designed for Extreme Climates: This makes it an ideal power source for devices used in very cold environments, such as winter camping, arctic expeditions, tactical operations in freezing conditions, or just general use in extremely cold regions.

Advanced Safety Features:

Nitecore is known for building robust safety into their batteries, and the NL2142LTP is no exception. It includes multiple layers of protection to ensure safe operation and longevity:

• Built-in Pressure Relief Valve: To prevent internal pressure buildup, which can be dangerous.

• High Temperature Resistant Design: Helps the battery perform safely even when pushed hard.

• Built-in PTC (Positive Temperature Coefficient): Provides automatic protection against overcurrent surges, preventing damage to both the battery and the device it's powering.

• Protection against Overcharging: Prevents the battery from being charged beyond its safe voltage limit.

• Protection against Over-discharging: Prevents the battery from being drained too low, which can damage the cell.

• Short-circuit Protection: Guards against damage from accidental short circuits.

• Nickel-plated Stainless Steel Connectors: These provide good impact resistance, excellent conductivity, and resistance against oxidation, ensuring reliable performance over time.

• Tough Plastic Circuit Board Protector: Adds another layer of physical protection.

• Globally Insured and Certified: Provides an extra layer of assurance regarding its safety and quality.

Applications:

The NL2142LTP is specifically recommended for:

• High-lumen flashlights and headlamps used in cold weather.

• Outdoor enthusiasts engaged in winter activities like hiking, climbing, skiing, or hunting in freezing conditions.

• Professionals working in cold climates (e.g., search and rescue, law enforcement, military).

• Any 21700-compatible device that needs consistent and reliable power in low temperatures.

Compatibility Note:

While it's a button-top 21700, Nitecore explicitly states it does NOT work in their E4K and i Series flashlights (e.g., P20i, P20iX, SRT6i), as those models often require proprietary or specifically designed batteries with integrated charging or communication features. It's designed for flashlights and devices that accept standard 21700 button-top cells.

In summary, the Nitecore NL2142LTP is a premium 21700 battery tailored for demanding users who require reliable, high-performance power for their electronic devices, particularly in extremely cold environments where standard batteries would fail.

Vendor Homepage: charger.nitecore.com/product/nl2142ltp
Category Code: BAT
CnCode: 85076000
Unit Box Height: 0.03
Unit Box Length: 0.14
Unit Box Width: 0.078
Nominal voltage: 3.6
Battery: Rechargeable
Battery capacity: 4200
Units per Shipping Box: 1
Unit Calculated Volume: 0.0003276
Product Net Weight: 0.023
Unit Calculated Weight: 0.083