Description
Samsung 50S 21700 Cell – 5000mAh – High-Performance Lithium-Ion Battery - Check availability
The Samsung 50S 21700 5000mAh is a high-performance lithium-ion cell designed for builds that need strong runtime, high energy density, and dependable current delivery.
With 5000mAh typical capacity (4800mAh minimum), 3.6V nominal voltage, and up to 25A continuous discharge without temperature cut-off (45A with 80°C temperature cut-off), this cell is well suited for power tools, outdoor power equipment, cleaners, high-output battery packs, and custom performance assemblies.
Samsung positions the 50S as a runtime-optimized 21700 cell for demanding applications. It is best used in properly engineered battery packs with suitable BMS/PCB protection and temperature monitoring.
Specifications:
| Model | Samsung INR21700-50S |
| Size | 21700 |
| Nominal Capacity | 5000mAh |
| Minimum Capacity | 4800mAh |
| Nominal Voltage | 3.6V |
| Max Voltage | 4.2V |
| Min Discharge Voltage | 2.5V |
| Max Continuous Discharge | 25A (without temperature cut-off) / 45A (with 80°C temperature cut-off) |
| Standard Charge Current | 2.5A (0.5C) |
| Rated Charge Current | 6A |
| Max Charge Current | 10A (step charge) / 6A (continuous charge) |
| Standard Discharge | 1A (0.2C), 2.5V cut-off |
| Chemistry | Li-ion |
| Positive Terminal | Flat Top |
| Protected | No |
| Rechargeable | Yes |
| Initial Impedance | ≤14mΩ |
| Approx. Weight | 72.0g Max |
| Dimensions | 21.25mm diameter max × 70.62mm height max |
| Operating Temperature | Ambient — Charge: 0°C to 60°C / Discharge: -20°C to 60°C; Surface — Charge: 0°C to 60°C (recommended recharge release <45°C) / Discharge: -20°C to 80°C (must re-discharge release <60°C) |
| Storage Condition | Store at 0°C to 23°C, below 65% RH, low dust, no corrosive gas; for long-term storage keep at shipping voltage and preserve dry and low-temperature |
| Cycle Life | ≥2940mAh after 250 cycles at 25A discharge; ≥2940mAh after 100 cycles at 45A discharge with 80°C cut-off |
| Datasheet | Datasheet |
Applications:
- ✅ High-Performance E-Bikes
- ✅ Electric Scooters
- ✅ Power Tools
- ✅ Heavy-Duty Battery Packs
- ✅ Custom 21700 Builds
⚠️ Safety Warning for Lithium-Ion Battery Usage
Customers should understand proper lithium-ion battery handling before use. These cells can present fire, burn, or explosion hazards if short-circuited, overcharged, physically damaged, overheated, punctured, or used outside manufacturer specifications. Always charge on a fire-resistant surface and never leave charging batteries unattended.
By purchasing or using this battery, the user assumes responsibility for correct handling, pack integration, charging, temperature management, and protection. This cell is best used in a properly designed battery pack with appropriate BMS/PCB protection. Only use chargers and charging methods designed for this battery type, and never mix old and new cells in the same pack.
Important Usage Guidelines:
- Not for Use in E-Cigarettes or Similar Devices
- Use in a Properly Protected Pack
- Spot Weld Only – Do Not Solder Directly
- Monitor Temperature Under High Load
- Inspect Wrap and Insulator Ring Before Use
- Follow Manufacturer Specs Strictly
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