Application — ESS and high-capacity power supply
Requirement — This ESS and high-capacity power supply application also required AC220V mains power and regulated auxiliary power.
Solution — We integrated an AC220V 4kW inverter, a charging module, and regulated DC-DC converters into a LiFePO4 8S pack (DC 25.6V, 5,242Wh).
Result — The integrated build in an approx. 75kg housing met the ESS and high-capacity power supply specification.
If you are considering a custom build to a similar specification, submit a requirements sheet. Our engineer will review it and respond.
Specification
Specifications
| Product Code | DMOP-LF5242Wh-AC4000-CV |
|---|
General
| Model | DMOP-LF5242Wh-AC4000-CV |
|---|---|
| Dimension | Approx. L740 x W606.8 x H156mm (including protrusions) |
| Weight | Approx. 75kg |
Battery ① Electrical specifications
| Battery Type | 8S LiFePO₄ |
|---|---|
| Nominal Voltage | 25.6V (22.4–29.2V) |
| Nominal Capacity | |
| Energy | 5,242Wh |
| Max Discharge Power | |
| Charging Method | CC-CV(Constant Voltage with Limited Current) |
| Standard Charging Condition (0.2C) | 29.2V±1%, 40.8A, CC-CVEnd Current : 4.08A (0.02C) |
| Max Charging Condition | 29.2V±1%, 102A, CC-CVEnd Current : 4.08A (0.02C) |
| Standard Discharge Current | |
| Max Discharge Current | |
| Instantaneous Discharge Current | |
| Discharge Cut-off Voltage | 22.4V2.8V per cell |
| AC output | AC 220V – 4,000W(60Hz) (Surge 5,000W ≤ 1.5Sec) |
| DC-DC charging module | Input: 6.0–24.0V, 20W- Output: 29.2V MAX 20W (CC-CV) |
Battery ② Operation · Safety
| Max Temperature Range | Charging: 0 – +45°C Discharging: -20 – +55°C Storage (recommended): +5 – +30°C |
|---|---|
| Battery Management System | Module configuration: 8P Overcharge cutoff: 3.70–3.90V±25mV per cell Overcharge recovery: 3.50–3.70V±50mV per cell Over-discharge cutoff: 2.00–2.50V±25mV per cell Over-discharge recovery: 2.40–2.90V±50mV per cell Overcurrent cutoff: 100–125A±25% per module Short-circuit protection: Yes Over-temperature cutoff: Yes Cell balancing: Yes Control method: MOSFET |
| Storage Life | Up to 6 months under no-load conditionsState of charge: SoC 60% Environment: ambient 25°C, humidity ≤70% |
| Cycle Life | ≥60% of nominal capacity after 2500 cycles Charge/discharge condition: standard charge, then discharge at the standard discharge current down to the cut-off voltage Environment: ambient 25°C, humidity ≤70% |
Terminals · Control
| Terminal configuration | |
|---|---|
| Terminal specification | |
| Fastening · Wiring | |
| Charge/discharge switch (ON/OFF) |