314Ah large-format cell
Energy storage confidence that still discharges at -30℃
Whether an energy storage project moves forward comes down to two things for the customer: whether cycle life can carry the payback period, and whether system-level safety can pass approval. QuanVol energy storage batteries QV-71174206EB-314Ah use a lithium iron phosphate system, with a nominal capacity of 314Ah, an energy density of 166 Wh/kg / 352 Wh/Land a discharge temperature floor down to -30℃。
The economics of energy storage are calculated over twenty years
but the risk is calculated every single day
Commercial, industrial and residential energy storage are all installed where people are present. A system-level safety failure costs far more than the equipment itself. At the same time, installations in northern regions face low-temperature charge and discharge limits, and low-temperature performance directly determines the latitude at which the system can be deployed.
QV-71174206EB-314Ah · Full Specifications
Large-format energy storage cell / commercial and industrial and residential energy storage systemsCore electrical performance
QV-71174206EB-314Ah| Cell Type | Solid-state lithium-ion battery |
|---|---|
| Nominal Capacity | 314Ah（25±2℃，0.5C/0.5C） |
| Nominal Voltage | 3.2V |
| Operating Voltage Range | 2.5 ~ 3.65V（0℃ < T ≤ 55℃）；2.0 ~ 3.65V（-30℃ ≤ T ≤ 0℃） |
| Cathode Material | Lithium iron phosphate LiFePO4 |
| Maximum Continuous Charge Current | 314A（25±2℃） |
| Maximum Continuous Discharge Current | 314A（25±2℃） |
| Peak Charge Current | 628A @60s，SOC ≤ 80% |
| Peak Discharge Current | 628A @60s，SOC ≥ 20% |
| Operating Temperature | Charge 0℃ < T ≤ 55℃; discharge -30℃ ≤ T ≤ 55℃ |
| Storage Temperature | -30 ~ 60℃ (humidity ≤95%RH, non-condensing) |
| Energy Density | 166 Wh/kg；352 Wh/L |
| Internal Resistance | ACR（1kHz）≤0.30mΩ（25%~50% SOC） |
| Standard Charge | 0.5I1(A) constant current to 3.65V, then constant voltage to 0.05I1(A) (1I1 = 280A) |
| Battery Weight | 5.40 ± 0.15 kg |
| Dimensions | Thickness 71.7±0.50mm × width 174.00±0.50mm × shoulder height 204.40±0.60mm / total height 206.80±0.60mm |
| Factory Capacity Criterion | 110% × rated capacity ≥ discharge capacity ≥ 100% × rated capacity |
| Reference Standards | GB/T 31484-2015、GB/T 31486-2015、GB 38031-2020、GB/T 19596 |
Charge Limits by Temperature
Standard charge and fast charge are current-limited separately in different temperature ranges| Temperature Range | Standard Charge | Fast Charge |
|---|---|---|
| T ≤ 0℃ | Current limited | Current limited |
| 0℃ < T < 10℃ | 0.1I1(A) constant current to 80% SOC | 0.2I1(A) constant current to 80% SOC |
| 10℃ ≤ T < 15℃ | 0.2I1(A) to 3.65V, then constant voltage to 0.05I1(A) | 0.3I1(A) to 3.65V, then constant voltage to 0.05I1(A) |
| 15℃ ≤ T < 45℃ | 0.5I1(A) to 3.65V, then constant voltage to 0.05I1(A) | 1.0I1(A) to 3.65V, then constant voltage to 0.05I1(A) |
| 45℃ ≤ T ≤ 55℃ | 0.2I1(A) to 3.65V, then constant voltage to 0.05I1(A) | 0.3I1(A) to 3.65V, then constant voltage to 0.05I1(A) |
| T > 55℃ | Current limited | Current limited |
This table is the direct basis for system integrators defining BMS strategy: 15~45℃ is the fast charge window, while below 0℃ and above 55℃ current limiting protection is required.
The above are the specifications of model QV-71174206EB-314Ah in the QuanVol energy storage battery product line. Cycle life data for this model will be added once confirmed by the technical team; this page does not cite cycle life data. Product pricing is quoted individually according to the specific model and order quantity and is not disclosed through public channels.
Covering two energy storage system scenarios
Commercial and Industrial Energy Storage
Peak-valley arbitrage, demand charge management and backup power. The 314Ah high capacity reduces the number of parallel connections for a simpler system architecture; low internal resistance means smaller efficiency losses under high-current conditions.
Residential Energy Storage
For equipment installed in homes, safety is the first selection criterion. A lithium iron phosphate system combined with solid-state technology contains risk at the source, and discharge capability at -30℃ extends coverage to northern markets.
Cell selection for your energy storage project starts here
Tell us the system capacity, grid connection voltage, installation ambient temperature and estimated annual volume. QuanVol will provide cell selection, pack configuration recommendations and sample validation arrangements.