Key Features
- High Energy Density: 4500mAh nominal capacity delivers extended runtime for power-hungry devices.
- Stable Output Performance: Rated for up to 5A continuous discharge for consistent energy delivery.
- Protected Button Top Design: Integrated PCB safeguards against overcharge, over-discharge, and short circuit.
- 21700 Form Factor: Optimized size for modern high-capacity portable electronics.
- Long Service Life: Designed for up to 500 recharge cycles with a stable multi-year shelf life.
Overview
The Nitecore NL2145 is a protected 21700 lithium-ion battery engineered for applications that demand long runtime and dependable output. Featuring a high 4500mAh capacity and a controlled 5A continuous discharge rating, this button top cell delivers reliable power for high-drain electronics. Integrated safety circuitry ensures stable and secure operation across a wide range of use cases.
Applications / Uses
- High-output flashlights
- Portable electronic devices
- Emergency preparedness equipment
- Outdoor and utility gear
- Button-top compatible 21700 devices
SPECIFICATIONS
| Manufacturer: | Nitecore |
| Model: | NL2145 |
| Size: | 21700 |
| Positive Terminal: | Button Top |
| Nominal Capacity: | 4500mAh |
| Continuous Discharge Rating (max): | 5A |
| Nominal Voltage: | 3.6V |
| Maximum Voltage: | 4.2V |
| Protected: | Yes (PCB) |
| Rechargeable: | Yes |
| Approx. Dimensions: | 21.8mm x 75.5mm |
| Approx. Weight: | 76g |
Nitecore NL2145 21700 4500mAh Data Specification Sheet
⚠ Important Safety Warnings
While this battery is equipped with built-in protection circuitry to help prevent overcharging, over-discharging, and short circuits, improper handling or misuse can still result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury or property damage. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Intended Use: This battery is designed for use in flashlights, headlamps, and similar devices that require a button top configuration. Ensure compatibility with your device before purchase or use.
- Protection Circuit Limitations: While the protection circuit provides additional safety, it cannot prevent damage caused by misuse, including exposure to liquids, extreme heat, or physical damage.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects (e.g., keys, coins, tools) that can cause a short circuit. Do not store loose batteries in pockets, bags, or other uncontrolled environments.
- Inspection: Do not use if the battery is dented, leaking, bulging, or if the outer wrapper or button top is damaged.
- Charging: Use a smart charger specifically designed for button top protected batteries. Do not exceed the battery's voltage and current specifications. Never leave the battery unattended while charging.
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Prohibited Activities:
- Do not expose the battery to water, fire, or high heat.
- Do not modify, puncture, crush, or attempt to disassemble the battery.
- Do not use the battery if it becomes unusually hot during use or charging.
- Emergency Response: If the battery overheats, emits smoke, or shows other signs of failure, stop using it immediately. Move the battery to a safe, non-flammable surface (e.g., sand or concrete) and follow emergency protocols.
Disclaimer
IMR Batteries is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols.
It is the reseller's responsibility to ensure all product warnings and safety guidelines are effectively communicated to their customers. Some cells are sold in bulk packaging and are not individually packaged. Resellers must provide appropriate packaging for each individual cell sold and must not distribute cells loose, unprotected, or without a proper storage box or case.
Product compatibility is the sole responsibility of the customer. IMR Batteries does not guarantee compatibility with any specific device or application. We are not responsible for the design, assembly, performance, or safety of any battery pack constructed using our cells. It is the customer’s responsibility to ensure proper cell matching, protection circuitry, configuration, and safe construction practices.
Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.