CATL 314Ah vs 280Ah LiFePO4 Cell: Comprehensive Comparison Guide

Introduction: CATL's Market Leadership in LiFePO4 Cells

CATL (Contemporary Amperex Technology Co., Limited) is the world's largest manufacturer of lithium-ion batteries, commanding over 37% of the global market share in 2025. When it comes to LiFePO4 prismatic cells for energy storage, CATL has set the industry benchmark with two flagship products: the long-established 280Ah cell and the newer, higher-capacity 314Ah cell.

The 280Ah cell has been the workhorse of the energy storage industry since its introduction, powering countless residential, commercial, and utility-scale ESS projects worldwide. The 314Ah cell, launched as CATL's next-generation product, promises 12% more capacity in a similar form factor. But does the newer cell automatically make the better choice for every application?

In this comprehensive guide, we compare the CATL 314Ah and 280Ah LiFePO4 cells across specifications, energy density, dimensions, cycle life, cost, and application suitability — giving you the data-driven insights needed to make the right procurement decision.

CATL 280Ah Cell Overview

The CATL 280Ah LiFePO4 prismatic cell is one of the most widely deployed energy storage cells in the world. Its proven reliability, excellent cycle life, and broad market availability have made it the default choice for ESS integrators and battery pack assemblers.

CATL 280Ah LiFePO4 Cell Specifications

Parameter	Specification
Nominal Capacity	280 Ah
Nominal Voltage	3.2 V
Energy	896 Wh
Charge Cut-off Voltage	3.65 V
Discharge Cut-off Voltage	2.5 V
Standard Charge Current	140 A (0.5C)
Max Continuous Charge Current	280 A (1C)
Max Continuous Discharge Current	280 A (1C)
Dimensions (L×W×H)	173.7 × 71.7 × 207.2 mm
Weight	~5.45 kg
Gravimetric Energy Density	~164 Wh/kg
Internal Resistance	≤ 0.25 mΩ
Cycle Life (80% DoD)	8,000+ cycles
Operating Temperature	Charge: 0~55°C / Discharge: -20~60°C
Chemistry	LiFePO4 (LFP)

CATL 314Ah Cell Overview

The CATL 314Ah cell represents the company's next-generation large-capacity LFP platform. By optimizing the internal structure and electrode formulation, CATL achieved a 12.1% capacity increase over the 280Ah cell while maintaining essentially the same external dimensions. This makes the 314Ah a drop-in upgrade for many existing pack designs.

CATL 314Ah LiFePO4 Cell Specifications

Parameter	Specification
Nominal Capacity	314 Ah
Nominal Voltage	3.2 V
Energy	1,005 Wh
Charge Cut-off Voltage	3.65 V
Discharge Cut-off Voltage	2.5 V
Standard Charge Current	157 A (0.5C)
Max Continuous Charge Current	314 A (1C)
Max Continuous Discharge Current	314 A (1C)
Dimensions (L×W×H)	173.8 × 71.7 × 207.2 mm
Weight	~5.51 kg
Gravimetric Energy Density	~182 Wh/kg
Internal Resistance	≤ 0.22 mΩ
Cycle Life (80% DoD)	8,000+ cycles
Operating Temperature	Charge: 0~55°C / Discharge: -20~60°C
Chemistry	LiFePO4 (LFP)

Key Differences: Head-to-Head Comparison

Parameter	CATL 280Ah	CATL 314Ah	Advantage
Nominal Capacity	280 Ah	314 Ah (+12.1%)	314Ah
Total Energy per Cell	896 Wh	1,005 Wh (+12.2%)	314Ah
Dimensions	173.7 × 71.7 × 207.2 mm	173.8 × 71.7 × 207.2 mm	~Equal
Weight	~5.45 kg	~5.51 kg (+1.1%)	280Ah (slightly lighter)
Gravimetric Energy Density	~164 Wh/kg	~182 Wh/kg (+11.0%)	314Ah
Volumetric Energy Density	~375 Wh/L	~421 Wh/L (+12.3%)	314Ah
Internal Resistance	≤ 0.25 mΩ	≤ 0.22 mΩ	314Ah
Cycle Life	8,000+ cycles	8,000+ cycles	Equal
Estimated Price per Cell	~$85–100	~$95–115	280Ah (lower cost)
Price per kWh	~$95–112/kWh	~$95–114/kWh	~Equal
Market Availability	Excellent (mature)	Good (growing)	280Ah

The 314Ah cell delivers 12% more energy in essentially the same physical footprint, with lower internal resistance. For new system designs, this translates to fewer cells needed, simpler pack architecture, and reduced BMS complexity for the same total energy.

Application Recommendations

Cost Analysis and Market Availability

While the 314Ah cell carries a slightly higher per-unit price (approximately 10–15% more than the 280Ah), the cost per kWh is nearly identical because you get 12% more energy per cell. The real economic advantage emerges at the system level:

• Fewer cells per system: A 100 kWh system needs 112 cells of 314Ah vs 112 cells of 280Ah — but to match 314Ah capacity with 280Ah cells, you'd need 125 cells. Fewer cells means lower busbar costs, reduced BMS complexity, and faster assembly.
• Lower structural costs: Same rack size holds more energy with 314Ah cells, reducing the cost per kWh of racking, wiring, and enclosure.
• Market availability: The 280Ah cell is more widely available from more distributors and has a longer field track record. The 314Ah is rapidly gaining availability but may have longer lead times from some suppliers.
• Proven reliability: The 280Ah has 4+ years of field data across millions of deployed cells. The 314Ah is newer but built on the same proven LFP platform.

For projects requiring immediate deployment with maximum supply chain certainty, the 280Ah remains a safe, well-validated choice. For new designs optimized for cost-per-kWh and system density, the 314Ah is the smarter forward-looking investment.

Conclusion

The CATL 314Ah and 280Ah LiFePO4 cells are both exceptional products, and the right choice depends on your project's priorities. The 314Ah cell is the clear winner for new system designs where maximizing energy density, reducing cell count, and optimizing cost per kWh are the goals. The 280Ah cell remains an excellent choice for projects prioritizing maximum market availability, proven field data, and immediate scalability.

At XINCOBATTERY, we supply genuine Grade A CATL LiFePO4 cells in both 280Ah and 314Ah capacities, backed by full traceability and certification documentation. Our team can help you evaluate which cell best suits your ESS, EV, or solar application — and provide complete battery pack assembly, BMS integration, and testing services.

Need CATL LiFePO4 cells for your project? Contact us today for current pricing, technical datasheets, and lead time information.