CBA71173207EES-314Ah 3.2V 314Ah Prismatic LiFePO4 Cell
A 1004.8Wh large-format lithium iron phosphate cell for professionally engineered stationary energy-storage modules.
1. Product Overview
The CBA71173207EES-314Ah is a rechargeable prismatic lithium iron phosphate cell with 3.2V nominal voltage, 314Ah nominal capacity and 1004.8Wh nominal energy. The aluminum-case format, blue insulation, dual top terminals and compact footprint are intended for integration into energy-storage modules with controlled preload, electrical insulation, busbars, thermal management and battery-management-system protection.
Standard operation is defined at 0.5P. At nominal energy this corresponds to 502.4W constant-power charging or discharging, subject to voltage, SOC and temperature limits. The maximum charging voltage is 3.65V. The discharge cut-off is 2.5V when cell temperature is above 0°C and 2.0V when temperature is 0°C or below.
2. Core Electrical Parameters
| Parameter | Specification |
|---|---|
| Model | CBA71173207EES-314Ah |
| Battery Type | Prismatic aluminum-case LiFePO4 cell |
| Nominal Voltage | 3.2V |
| Nominal Capacity | 314Ah |
| Nominal Energy | 1004.8Wh |
| Charge / Discharge Voltage | 3.65V maximum charge; 2.5V cut-off above 0°C; 2.0V cut-off at ≤0°C |
| Standard Charge / Discharge Power | 0.5P (502.4W at nominal energy) |
| AC Internal Resistance | 0.17±0.05mΩ (fresh cell, 1kHz, 30% SOC) |
| Cell Dimensions / Weight | T 71.8±1.0mm; W 173.8±0.8mm; L 204.8±0.8mm; L1 207.8±0.8mm; 5555±75g |
| Operating Temperature / Cycle Life | Charge 0–60°C; discharge -20–60°C; ≥8000 cycles to 70% initial energy under specified 0.5P test conditions |
The initial charge/discharge energy requirement is at least 1004.8Wh and initial energy efficiency is at least 93% under the defined test procedure. The mass energy density requirement is at least 178Wh/kg and volumetric energy density is at least 393Wh/L. Monthly residual-capacity loss is limited to 3.5% under the stated 25±2°C, 30% SOC storage condition.
3. Cell Size and Mechanical Structure
The cell body uses a rectangular aluminum case with two top terminals. Dimension control is specified under 300±30kgf pressure in the thickness direction. The positive and negative terminals are rated to withstand at least 10Nm torque, while permitted terminal welding penetration is no more than 2.0mm.
| Label | Description | Dimension |
|---|---|---|
| T | Cell thickness | 71.8±1.0mm |
| W | Cell width | 173.8±0.8mm |
| L | Cell body height | 204.8±0.8mm |
| L1 | Maximum height including terminal area | 207.8±0.8mm |
| L2=L3=L5=L6 | Terminal feature dimensions | 34.7±0.5mm |
| L4 | Terminal center spacing | 123.0±0.5mm |
4. Temperature and Charging Control
The absolute cell charging-temperature range is 0°C to 60°C, and the permitted discharge-temperature range is -20°C to 60°C. The optimum discharge range is 15°C to 35°C. Charging power is staged by both cell temperature and SOC: for example, the maximum is 0.5P from 20°C to 45°C at 0%–70% SOC, while the permitted power is reduced at higher SOC and near the temperature boundaries. The BMS must enforce these staged limits rather than applying one constant current across all conditions.
5. Cycle Performance and Retention
Cycle performance is specified as at least 8000 cycles until energy reaches 70% of initial energy. The test uses 25±2°C ambient temperature, 300±30kgf initial clamping pressure, 0.5P constant-power charging to 3.65V, a 30-minute rest, 0.5P constant-power discharge to 2.5V, and another 30-minute rest. Actual service life depends on SOC window, temperature, preload, current profile, thermal uniformity and BMS control.
The six-month 100% SOC storage-fading requirement and the 180-cycle short-term cycle-fading requirement are each limited to 5% under their respective stated test conditions. These values are test-bound performance criteria and should not be presented as unrestricted field guarantees.
6. System Protection and Application Fit
This is a cell, not a protected standalone battery pack. The completed system requires a BMS that monitors and protects each cell, plus coordinated fusing, insulation, compression, cooling, electrical clearances and fault handling. Charge must stop outside the allowed charging-temperature and voltage ranges; discharge must stop outside the permitted discharge-temperature and cut-off limits. The system should prevent overcharge, over-discharge, short circuit, reverse polarity and operation above allowable power.
Prismatic cell outside viewAppropriate use cases include grid and commercial energy storage, solar and wind buffering, telecom backup, UPS rooms, mobile emergency power and engineered marine or RV house-power systems. Suitability depends on the module architecture and on compliance with the operating limits above.
7. Application Examples
8. VTCBATT OEM/ODM and Supply Support
VTCBATT supports factory-direct cell supply, sample evaluation, cell matching, terminal and busbar interface coordination, insulation and compression-part development, module-layout discussion, BMS parameter review, private labeling, wholesale orders and batch production. Buyers should provide the target system voltage and energy, series/parallel arrangement, mechanical envelope, operating-temperature profile, cooling method, BMS strategy, prototype schedule and forecast demand for technical review.
