3.7V 21700 3000mAh Lithium-ion Rechargeable Battery Cell – 11.1Wh High Capacity Li-ion Cell for Power Tools, DIY Packs & Electronics
₨ 340
- 🔋 High Capacity: 3000mAh for longer usage time
- ⚡ Nominal Voltage: 3.7V stable output
- 🔥 Energy Rating: 11.1Wh high efficiency
- 🔄 Rechargeable: 500+ charge/discharge cycles
- 📦 21700 Size: Compact yet powerful (21mm × 70mm)
- 🚀 High Energy Density: More power than 18650 cells
- 🛠️ Versatile Use: DIY packs, electronics, tools, flashlights
- ⚖️ Lightweight Design: Approx. 70g
- 🔌 Flexible Configuration: Supports series & parallel setups
- 🛡️ Reliable Performance: Stable voltage and safe operation
The 3.7V 21700 3000mAh Lithium-ion Rechargeable Cell (11.1Wh) is a powerful and reliable energy solution designed for modern high-drain devices and custom battery applications. Built with advanced lithium-ion technology, this cell delivers consistent voltage output, high energy density, and extended runtime—making it ideal for portable electronics, DIY battery packs, power tools, flashlights, and more.
Compared to traditional 18650 cells, the 21700 format offers higher capacity and better efficiency, allowing you to run devices longer without increasing size significantly. Whether you’re building a battery pack or powering a single device, this cell provides excellent performance and durability.
With a long cycle life of 500+ charges, stable discharge characteristics, and a robust cylindrical design, this battery is engineered for both everyday use and demanding projects.
📊 Technical Specifications
- Battery Type: Lithium-ion Rechargeable
- Model: 21700
- Nominal Voltage: 3.7V
- Capacity: 3000mAh
- Energy: 11.1Wh
- Max Charging Voltage: 4.2V
- Discharge Cutoff Voltage: ~2.75V
- Standard Charging Current: ~1A (Recommended)
- Max Continuous Discharge: 5A–10A (application dependent)
- Dimensions: Ø21mm × 70mm
- Weight: ~70g
- Cycle Life: 500+ cycles
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