Description
EVE 50E 21700 Cell – 5000mAh – High-Capacity Lithium-Ion Battery - Check availability
The EVE 50E 21700 5000mAh is a high-capacity lithium-ion cell designed for applications that need long runtime, strong energy density, and dependable moderate-current performance.
With 5000mAh nominal capacity (4950mAh minimum), 3.65V nominal voltage, and up to 15A continuous discharge (3C), this cell is well suited for power tools, garden tools, electric two-wheelers, vacuum cleaners, sweeping robots, and custom long-runtime battery assemblies.
EVE positions the 50E as a high-capacity 21700 cylindrical NCM cell with long cycle life. It is best used in properly engineered battery packs with suitable BMS/PCB protection and temperature monitoring.
Specifications:
| Model | EVE INR21700/50E |
| Size | 21700 |
| Nominal Capacity | 5000mAh |
| Minimum Capacity | 4950mAh |
| Nominal Voltage | 3.65V |
| Max Voltage | 4.2V |
| Min Discharge Voltage | 2.5V |
| Max Continuous Discharge | 15A (3C), 2.50V cut-off |
| Standard Charge Current | 1.0A (0.2C) |
| Max Charge Current | 10.0A (2C, not for cycle life) |
| Standard Discharge | 1.0A (0.2C), 2.50V cut-off |
| Chemistry | NCM / Li-ion |
| Positive Terminal | Flat Top |
| Protected | No |
| Rechargeable | Yes |
| Initial Impedance | ≤18mΩ (initial internal impedance at AC 1kHz, shipping SOC) |
| Approx. Weight | 68.0±2.0g |
| Dimensions | 21.15±0.10mm diameter × 70.15±0.15mm height |
| Operating Temperature | Ambient — Charge: 0°C to 45°C / Discharge: -20°C to 60°C; Cell surface — Charge: 0°C to 60°C (recommended recharge release <45°C) / Discharge: -20°C to 70°C (recommended re-discharge release <60°C) |
| Storage Condition | At shipping SOC: -20°C to 60°C within 1 month; -20°C to 45°C within 3 months; -20°C to 25°C within 1 year; ≤65% RH |
| Cycle Life | Capacity ≥70% after 1000 cycles at 2.5A charge / 5.0A discharge; Capacity ≥70% after 500 cycles at 5.0A charge / 5.0A discharge |
| Datasheet | Datasheet |
Applications:
- ✅ Long-Range E-Bikes
- ✅ Energy Storage Modules
- ✅ Portable Power Stations
- ✅ Solar Backup Battery Packs
- ✅ Endurance-Focused Custom 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 During Charging and Discharge
- Inspect Wrap and Insulator Ring Before Use
- Follow Manufacturer Specs Strictly
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