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Product Description
The 18650 3.7V 2000mAh Li-Ion Battery is a dependable, cost-effective cylindrical rechargeable energy cell engineered for general electronics, LED emergency lighting, DIY power banks, and microcontroller projects. Delivering a nominal 3.7 volts with a stable 2000mAh capacity, this versatile battery provides steady power output and reliable performance for everyday electronic devices and prototyping builds.
Essential for powering portable sensors, custom instrumentation, emergency lamps, and small multi-cell battery packs, this practical 18650 cell combines great value with solid energy storage.
⚠️ Safety & Spot Welding Tip: When assembling multi-cell battery packs, always use pure nickel strips and a proper spot-welding machine rather than soldering directly to the battery terminals. Excessive heat can damage the internal chemistry and create a fire hazard.
Technical & Architectural Highlights
Stable 2000mAh Capacity: Provides consistent runtimes and dependable energy storage for moderate-drain electronic devices and workshop projects.
Reliable Lithium-Ion Chemistry: Maintains a steady 3.7V nominal voltage output (charging up to 4.2V max) with low self-discharge rates.
Standard 18650 Form Factor: 18mm diameter by 65mm length fits universally into standard battery holders, single-cell slots, and custom enclosures.
Cost-Effective Power Source: An economical choice for single-cell applications or entry-level multi-cell series/parallel configurations.
Technical Specifications
| Parameter | Value / Specification |
| Product Type | Rechargeable Lithium-Ion (Li-Ion) Cylindrical Cell |
| Cell Size | 18650 (18mm x 65mm) |
| Nominal Voltage | 3.7V DC |
| Full Charge Voltage | 4.2V DC |
| Capacity | 2000 mAh |
| Chemistry | Lithium-ion |
| Terminal Type | Flat Top (Standard) |
Applications
Microcontroller & Sensor Nodes: Powering portable Arduino, ESP32, or IoT monitoring units with appropriate regulator modules.
Emergency & LED Lighting: Replacing worn-out cells in rechargeable emergency lights, flashlights, and desk lamps.
Custom Electronic Projects: Building cost-effective backup power sources, test bench supplies, and small robotics packs.
What’s in the Box
1 x 18650 3.7V 2000mAh Li-Ion Battery.
All your electronics components, battery cells, and prototyping accessories are available with fast shipping across Egypt from Pro Tronix!
