The 628Ah LiFePO4 (Lithium Iron Phosphate) cell is an ultra-high capacity energy storage solution engineered
for next-generation Battery Energy Storage Systems (BESS). Designed specifically for utility-scale and commercial & industrial (C&I) applications,
this cell delivers exceptional energy density, ultra-low internal resistance, and an industry-leading cycle life of ≥12,000 cycles (80% DoD).
With a robust and compact design weighing only 11.3kg, this 628Ah prismatic cell reduces the total number of cells required per system,
significantly lowering assembly complexity and overall system cost. Its ultra-low internal resistance of ~0.12mΩ ensures high efficiency
and minimal heat generation during high-power operations.
Key Benefits
Ultra-High Capacity: 628Ah nominal capacity, maximizing energy storage per cell and reducing system integration costs.
Extreme Longevity: ≥12,000 cycles at 80% DoD, providing exceptional operational reliability and a lower Levelized Cost of Storage (LCOS).
Ultra-Low Internal Resistance: ~0.12mΩ, ensuring high round-trip efficiency, lower heat generation, and stable performance under high current.
Lightweight & Compact Design: Weighing only 11.3kg with a thickness of 72mm, it allows for more compact and space-efficient module designs.
Superior Safety: LFP chemistry guarantees high thermal stability and intrinsic safety, compliant with major international standards.
Maintenance-Free: Designed for long-term, maintenance-free operation in demanding grid and renewable energy environments.
Technical Specifications
1. Electrical Characteristics
| Item | Specification |
|---|
| Chemistry | LiFePO4 (LFP) |
| Nominal Capacity | 628Ah |
| Nominal Voltage | 3.2V (Standard LFP) |
| Nominal Energy | ~2009.6Wh (Calculated: 3.2V × 628Ah) |
| Internal Resistance | ~0.12mΩ |
| Cycle Life | ≥12,000 cycles (80% DoD) |
| Energy Density | ~177.8 Wh/kg (Calculated: 2009.6Wh / 11.3kg) |
2. Mechanical Dimensions
| Item | Specification |
|---|
| Weight | 11.3 kg |
| Thickness | 72 mm |
| Width | 352 mm |
| Height (excl. terminals) | 205 mm |
| Height (incl. terminals) | 207 mm |
3. Environmental & Performance (Reference Standards)
| Item | Specification |
|---|
| Operating Temperature | -20°C to 60°C (Standard LFP) |
| Storage Temperature | -20°C to 45°C |
| Storage SOC | 10% ~ 50% (Recommended) |
BMS Protection Parameters (Minimum Requirements)
Note: The following are standard LFP protection thresholds for reference. Please refer to the latest official specification for exact values.
| Protection Item | Threshold | Action |
|---|
| Charge Termination | 3.65V | Request to stop charging |
| Over-charge Level 1 | ≥3.7V | Force stop charging |
| Over-charge Level 2 | ≥3.8V | Force stop charging & lock BMS |
| Discharge Termination | 2.5V (T>0°C) / 2.0V (T<0°C) | Request to stop discharging |
| Over-discharge Level 1 | 2.4V (T>0°C) / 1.8V (T<0°C) | Force stop discharging |
| Over-discharge Level 2 | 2.0V (T>0°C) / 1.6V (T<0°C) | Force stop discharging, charge to 50% SOC, and lock BMS |
| Overheat Protection | Cell temp ≤60°C | Stop charge/discharge |
| Low-Temp Protection | Charge: >0°C / Discharge: ≥-30°C | Stop charge/discharge |
Applications
Utility-scale Battery Energy Storage Systems (BESS)
Commercial & Industrial (C&I) Energy Storage
Solar & Wind Renewable Energy Integration
Grid Frequency Regulation and Peak Shaving
Microgrid and Off-grid Energy Storage
Assembly & Storage Conditions
Storage SOC: 10% ~ 50% is recommended.
Storage Environment: Relative humidity ≤80%, temperature -20°C ~ 35°C, altitude ≤5,000m.
Note on Preload Force: System mechanical design must account for cell swelling forces during long-term cycling. Please refer to the official technical datasheet for the specific preload force and swelling force data for this 628Ah model.

