Overview

The OpenELAB 1-Pack 2C INR 21700 5000mAh 3.7V Lithium-Ion Batteries deliver dependable, rechargeable power for high-drain electronics. With a 5000mAh capacity and a 2C discharge rate (up to 10A), these cells are engineered to balance endurance, safety, and consistent output for demanding applications.

Key Specifications

Cell Type: INR21700, cylindrical
Dimensions: 21.7 70.0 mm
Weight (per cell): ~68 g
Nominal Capacity: 5000 mAh
Nominal Voltage: 3.7 V
Max Continuous Discharge: 2C (up to 10 A)
Energy: ~18.5 Wh per cell
Top Type: Flat top
Cycle Life: 5001000 cycles
Pack Size: 1 cells included

Performance Highlights

High Capacity: 5000mAh for extended runtime in portable devices
Strong Output: 10A continuous discharge supports high-drain electronics
Thermal Stability: INR chemistry ensures safe operation under load
Durable Design: Rated for 500+ charge cycles with consistent performance
Wide Temperature Range: Operates from -20C to +60C

Applications

High-power LED flashlights
Portable tools and e-bike battery packs
Solar lighting and backup systems
DIY robotics and custom battery projects
Other high-drain electronics requiring stable power

Package Contents

1 OpenELAB INR21700 5000mAh 3.7V rechargeable batteries
Protective packaging for safe delivery

Why OpenELAB?

Reliable INR lithium-ion chemistry for safety and performance
2C discharge rate (10A) for demanding applications
Rechargeable and RoHS/CE/UN38.3 certified
Compatible with standard 21700 flat-top battery holders