FEB 18650 4000mAh Battery addresses critical pain points in energy storage: limited cycle life, inconsistent discharge rates, and safety concerns in demanding environments. With 20,000+ deep cycles, 2C continuous discharge (8A), and 4000mAh capacity, this lithium-ion (Li-ion) cell delivers reliable power for industrial machinery, commercial electronics, and renewable energy systems.
⚡ Key Technical Specifications
| Parameter | Specification | Test Conditions |
|---|---|---|
| Nominal Voltage | 3.6V | Stable output range: 2.5V–4.2V |
| Max Continuous Discharge | 8A (2C) | -20°C to 60°C |
| Cycle Life | ≥500 cycles | 80% DOD, 80% capacity retention |
| Nominal Capacity | 4000mAh | 0.5C discharge @25°C |
| Internal Resistance | ≤2.0mΩ | 1kHz impedance measurement |
| Operating Temperature | -20°C to 60°C | Charging/discharging efficiency |
| Storage Conditions | 25°C±5°C, 40%-60% RH | 3.6-3.7V, recharge every 6 months |
| Dimensions | 18.3×65.0mm | Lightweight design (370±10g) |
🔥 Competitive Advantages
- Ultra-Durable: 20,000+ cycles vs. standard Li-ion (10× lifespan)
- High Power Output: 8A continuous discharge for heavy loads
- Safety Certified: Overcharge/overdischarge protection & thermal stability
- Wide Temperature Tolerance: -20°C operation with 80% capacity retention
🏭 Target Applications
- Industrial Automation: Forklifts, AGVs, and robotics
- Commercial Electronics: UPS systems, security devices, and medical equipment
- Renewable Energy: Solar-powered streetlights and off-grid systems
📦 Request a Quote Now!
Special Offer MOQ（100）:
- ✅ 500+ units: Free BMS integration
- ✅ 1000+ units: 15% bulk discount
- ✅ Customized solutions: Contact our engineers
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