The Smart BatteryProtect 48 V 100 A is designed to protect 48 V battery systems from excessive discharge and damaging voltage conditions. It automatically disconnects non-essential loads when the battery voltage drops below a preset level, preventing deep discharge and extending battery life.
Using built-in Bluetooth, the unit can be easily programmed via a mobile device to set custom connect and disconnect thresholds. It can also function as a remote system on/off switch and integrates with battery management systems (BMS), making it ideal for lithium battery applications and professional energy storage installations.
With ultra-low power consumption, solid-state MOSFET switching (no relays), and built-in alarm output, the Smart BatteryProtect offers reliable, spark-free operation for demanding DC environments such as solar, telecom, and off-grid systems.
Key Features
- Protects batteries from deep discharge by disconnecting loads at preset voltage levels
- Bluetooth programmable for easy setup and monitoring via mobile app
- Can be used as a system on/off switch
- Compatible with VE.Bus BMS for lithium battery integration
- Ultra-low current consumption, ideal for lithium systems
- Solid-state MOSFET switching — no relays and no sparks
- Built-in alarm output for warnings and fault indication
- Automatic delayed disconnect and reconnect to prevent nuisance tripping
- Over-voltage protection disconnects loads if DC voltage exceeds safe limits
- Ignition-proof design suitable for sensitive installations
- Includes pre-assembled DC minus connection cable
- Rugged construction with IP67-rated electronics for harsh environments
Technical Specifications
| Parameter |
Specification |
| Model |
Smart BatteryProtect 48 V 100 A |
| Maximum Continuous Load Current |
100 A |
| Peak Current |
250 A |
| Operating Voltage Range |
24 – 70 V |
| Alarm Output |
50 mA (short-circuit proof) |
| Current Consumption (BLE On) |
Approx. 1.9 mA (low-voltage shutdown: 1.7 mA) |
| Current Consumption (BLE Off) |
Approx. 1.7 mA (low-voltage shutdown: 1.6 mA) |
| Load Disconnect Delay |
90 seconds (immediate if triggered by BMS) |
| Default Disconnect Threshold |
42 V |
| Default Reconnect Threshold |
48 V |
| Over-Voltage Disconnect |
Load disconnected if voltage exceeds 64 V |
| Operating Temperature Range |
−40 °C to +40 °C (up to 60 °C at reduced load) |
| Protection Rating |
Electronics: IP67, Connections: IP00 |
| Connection Size |
M8 |
| Mounting Torque |
9 Nm |
| Weight |
0.8 kg |
| Dimensions (H × W × D) |
62 × 123 × 120 mm |
