High-frequency single-phase
HF S-T300
Compact single-phase on-board battery charger
The HF S-T300 is a compact and lightweight single-phase high-frequency battery charger designed for direct on-board installation on electric vehicles and industrial machines.
The charging process is microprocessor-controlled. The curves and main parameters can be configured by dip switches to adapt the battery charger to the battery characteristics.
- 12 and 24 V configurations
- Output currents from 10 to 28 A
- Weight approximately 1 kg

Main features
- Single-phase power supply 230 Vac ±10%, 50/60 Hz
- High-frequency Switching technology
- Microprocessor-controlled charging process
- Electrical efficiency of at least 90%
- Charging curves for flooded lead-acid, GEL and AGM batteries
- Charging curve for lithium batteries available as an option
- Charging curves and parameters configurable by dip switches
- Maintenance charging
- Automatic start
- Current control accuracy ±1 A
- Voltage control accuracy ±0,1 V
- 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-T300 is suitable for small electric vehicles, industrial cleaning machines, platforms, mobile equipment and other applications requiring a compact battery charger that can be installed directly on board.
The different configurations make it possible to select the model best suited to the battery voltage, capacity and required current.
Models and technical data
On small screens, scroll the table horizontally to read all data.
| Battery voltage | Available currents | Battery capacity | Maximum input power |
|---|---|---|---|
| 12 V | 10–28 A | 80–290 Ah | 170–500 W |
| 24 V | 10–28 A | 70–290 Ah | 330–930 W |
- Power supply:
- 230 Vac single-phase ±10%, 50/60 Hz
- Efficiency:
- ≥90%
- Dimensions:
- 230 × 100 × 70 mm
- Weight:
- 1 kg
Compatible accessories
- PR20 console for configuration and diagnostics
- Battery temperature probe
- IR remote LED indicator
The PR20 console makes it possible to change charging parameters, view operating values and consult the last 20 charging cycles and the last 10 alarms.
Request information
Contact us to identify the HF S-T300 configuration best suited to the battery voltage, capacity and technology.
