High-frequency single-phase
HF S-T401
Compact single-phase high-frequency battery charger
The HF S-T401 is a single-phase high-frequency battery charger designed for professional charging of batteries installed on electric vehicles and industrial machines.
Switching technology with PFC circuit and microprocessor control ensure an efficiency of at least 96% and precise control of the charging process. Specific curves are available for flooded lead-acid, GEL, AGM and lithium iron phosphate batteries.
- Electrical efficiency of at least 96%
- Configurations from 12 to 48 V
- Compact construction suitable for on-board installation

Main features
- Single-phase power supply 230 Vac ±10%, 50/60 Hz
- High-frequency Switching technology
- PFC circuit to improve efficiency and power factor
- Electrical efficiency of at least 96%
- Microprocessor-controlled charging process
- Charging curves for flooded lead-acid, GEL, AGM and lithium iron phosphate batteries
- Maintenance charging
- Automatic start
- Current control accuracy ±1 A
- Voltage control accuracy ±0,1 V
- Thermostatically controlled forced ventilation
- LED indication of charging status and alarms
- Thermal protection by internal probe
- Protection against battery reverse polarity
- Charging interruption when the battery is disconnected
- Can be installed directly on board the machine
- Machine interlock relay
Applications
The HF S-T401 is suitable for electric vehicles, industrial cleaning machines, platforms, small material-handling vehicles and other applications requiring a compact battery charger that can be installed directly on board.
The available configurations make it possible to select the model best suited to the battery voltage, capacity and technology.
Models and technical data
On small screens, scroll the table horizontally to read all data.
| Battery voltage | Maximum current | Battery capacity | Maximum output power |
|---|---|---|---|
| 12 V | 40 A | 240–400 Ah | 576 W |
| 24 V | 40 A | 240–400 Ah | 1152 W |
| 36 V | 25 A | 150–250 Ah | 1080 W |
| 48 V | 20 A | 150–250 Ah | 1152 W |
- Power supply:
- 230 Vac single-phase ±10%, 50/60 Hz
- Efficiency:
- ≥96%
- Dimensions:
- 316 × 193 × 90 mm
- Weight:
- 3,5 kg
Compatible accessories
- LCD console for programming and displaying parameters
- Battery temperature probe
- IR remote LED indicator
The LCD Console makes it possible to change charging parameters, view operating values and consult the last 1000 stored cycles.
Request information
Contact us to identify the HF S-T401 configuration best suited to the battery voltage, capacity and technology.
