Description
Samsung INR21700-50S 3.6V 5000mAh Li-ion Battery
The Samsung INR21700-50S 3.6V 5000mAh Li-ion Battery is one of the most powerful and reliable high-drain cells in the 21700 series, built by Samsung SDI for demanding energy applications. Engineered for extreme discharge performance up to 45A (9C), it’s ideal for devices that require high power output without sacrificing runtime or safety.
With a massive 5000mAh capacity and INR (Nickel-Manganese-Cobalt) chemistry, this original Samsung 50S cell offers outstanding stability, long cycle life, and minimal voltage drop under load. Perfect for electric bikes, scooters, power tools, drones, RC models, and custom lithium battery packs, this cell guarantees consistent and safe performance across all applications.
When paired with a proper BMS (Battery Management System), the Samsung 50S ensures optimized charging, discharging, and heat management — delivering industrial-grade reliability for professional or DIY use.
| Specification | Details |
|---|---|
| Model | Samsung INR21700-50S |
| Chemistry | Li-ion (INR – NMC) |
| Nominal Voltage | 3.6V |
| Nominal Capacity | 5000mAh |
| Charging Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Standard Discharge Current | 9.8A (2C) |
| Maximum Continuous Discharge Current | 45A (9C) |
| Cell Type | 21700 cylindrical |
| Dimensions (D×H) | 21.1mm × 70.5mm |
| Weight | Approx. 70g |
| Cycle Life | 600+ cycles |
| Manufacturer | Samsung SDI (Original) |
| Protection | Requires BMS for pack safety |
⚡ Key Features
Genuine Samsung SDI original 21700 Li-ion cell
Massive 5000mAh capacity with 45A continuous discharge
High power output with excellent thermal stability
Long cycle life and consistent voltage under load
Compact 21700 design for modern high-drain devices
Trusted performance for industrial and EV-grade projects
🔋 Applications
Electric bikes and scooters
Power tools and cordless equipment
Robotics and automation systems
Drones and RC hobby projects
Solar and backup energy storage
DIY lithium battery pack building
