The 18650 3.7V 3000mAh Lithium-Ion Battery is a rechargeable cylindrical battery designed for portable electronics, DIY power banks, robotics, LED lighting, battery packs, and other battery-powered applications. Its 18650 format provides a compact size with relatively high energy capacity.
Features
- Nominal voltage of 3.7V
- Capacity of 3000mAh
- Rechargeable lithium-ion chemistry
- Standard 18650 cylindrical format
- High energy density
- Compact and lightweight
- Suitable for individual or battery-pack applications
Specifications
| Specification | Value |
|---|---|
| Product Type | Rechargeable Li-ion Battery |
| Battery Size | 18650 |
| Chemistry | Lithium-Ion |
| Nominal Voltage | 3.7V |
| Full-Charge Voltage | 4.2V |
| Capacity | 3000mAh |
| Energy | Approx. 11.1Wh |
| Cell Diameter | Approx. 18 mm |
| Cell Length | Approx. 65 mm |
| Rechargeable | Yes |
| Protection Circuit | Model Dependent |
| Terminal Type | Flat Top / Model Dependent |
Applications
- DIY power banks
- Arduino and ESP32 projects
- Robotics
- LED flashlights
- Portable electronics
- Solar-powered projects
- Battery backup systems
- Electric DIY projects
- 18650 battery packs
- Portable power supplies
Advantages
- High capacity
- Rechargeable and reusable
- Compact 18650 form factor
- Good energy density
- Suitable for portable applications
- Easy to integrate into battery packs
Package Includes
- 1 × 18650 3.7V 3000mAh Li-ion Battery
Important Safety Note: Use a dedicated Li-ion charger or appropriate charging/BMS circuit with a 4.2V maximum charge voltage. Do not short-circuit, puncture, crush, overcharge, or expose the cell to excessive heat. The actual capacity, maximum discharge current, and whether the cell includes built-in protection should be verified from the specific battery model before use.







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