Cornex 21Ah LFP Battery solves critical industry pain points: unstable performance in extreme temperatures, limited cycle life, and safety concerns. With 21Ah capacity, 3C pulse discharge (63A), and 2000+ deep cycles, this GB38031-certified cell delivers reliable power for EVs, industrial equipment, and renewable energy storage.
⚡ Core Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal Capacity | 21Ah @0.33C (25°C) |
| Continuous Discharge | 1.5C (31.5A) |
| Pulse Discharge (10s) | 3C (63A) |
| Cycle Life | 2000+ cycles @90% DOD |
| Low-Temp Performance | ≥70% capacity @-20°C |
| Energy Density | 160Wh/kg |
| Weight | 0.3800±0.0200 kg |
| Dimensions | Ø40.5×139.9mm (with film) |
❄️ Extreme Environment Performance
- -20°C Operation: Maintains >70% capacity (1C discharge to 2.0V)
- 55°C Storage: 94% capacity retention after 7 days at 100% SOC
- Wide Voltage Range: 2.0V–3.65V (supports cold-start applications)
🔒 Safety & Reliability
- Certifications: GB38031, UN38.3, CE
- 7 Safety Validations:
- Overcharge (5.5V) ✅
- Short Circuit (≤2.5mΩ) ✅
- Crush (13kN) ✅
- 130°C Thermal Abuse ✅
🏭 Key Applications
- Electric Vehicles: E-buses, forklifts requiring 3C pulse power
- Solar ESS: 2000+ cycles for off-grid systems
- Telecom Backup: -30°C cold-start capability
- Marine Equipment: Saltwater-resistant packaging
💡 Competitive Advantages
- 3× Faster Response: 3C pulse vs. industry-standard 2C
- 10-Year Lifespan: 2000 cycles @90% DOD
- Low Self-Discharge: ≤3%/month (ideal for seasonal storage)
📦 Bulk Order Incentives (MOQ 50 units)
🔔 Limited Promotion:
- ✅ 50+ units: Free custom terminals (M6 threaded)
- ✅ 100+ units: Complimentary GB38031 test reports
- ✅ 500+ units: Dedicated engineering support
Contact immediately to obtain the latest quotation for Cornex 21Ah LFP Battery.
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