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Product Description
The 18650 3.7V 3000mAh Li-Ion Battery is a high-capacity, dependable cylindrical rechargeable energy cell engineered for demanding electronics, extended-runtime portable devices, and custom power solutions. Delivering a nominal 3.7 volts with an impressive 3000mAh capacity, this high-energy battery provides long-lasting power output and stable performance for high-drain and medium-drain applications alike.
Essential for powering wireless IoT nodes, custom power banks, high-performance LED flashlights, and multi-cell robotics packs, this premium 18650 cell combines exceptional capacity with reliable durability.
⚠️ 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
High-Capacity 3000mAh Output: Delivers extended runtimes and robust energy storage for demanding portable electronics and workshop projects.
Stable 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, multi-cell brackets, and custom enclosures.
Versatile Power Source: Highly efficient for single-cell gadgets or combined into series/parallel multi-cell configurations (such as 2S, 3S, or 4S packs).
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 | 3000 mAh |
| Chemistry | Lithium-ion |
| Terminal Type | Flat Top (Standard) |
Applications
IoT & Wireless Sensor Nodes: Providing long-lasting, autonomous power for remote ESP32 or Arduino monitoring units.
Flashlights & Outdoor Gear: Delivering maximum runtimes in high-performance LED torches and headlamps.
Custom Battery Packs & Power Banks: Building high-capacity 3.7V, 7.4V, or 11.1V power storage banks for robotics and portable electronics.
What’s in the Box
1 x 18650 3.7V 3000mAh Li-Ion Battery.
All your electronics components, battery cells, and prototyping accessories are available with fast shipping across Egypt from Pro Tronix!
