Battery Protection from Deep Discharge BatteryProtect 48V 100A Victron Energy – BPR048100400

BatteryProtect 48V 100A protection – is an intelligent electronic switch that disconnects the battery from consumers when the voltage drops below the permissible level. This protects both AGM / GEL and LiFePO₄ batteries from deep discharge, which can seriously reduce the service life or completely destroy the battery.

Thanks to MOSFET technology, the device is silent, does not spark, and also has low internal energy consumption. 

Battery protection against deep discharge is an indispensable component in motorhomes and all their varieties, special streetcars, as well as in sea and river boats, boats and yachts, where batteries are constantly discharged by DC loads.

Key advantages of the BatteryProtec electronic switch

1. Voltage 48 V
2. Battery protection against deep discharge
3. Support for working with lithium batteries (LiFePO₄) – via VE.Bus BMS
4. Low current consumption: only 1.5 mA in active mode
5. MOSFET switch – no relay, no sparks, silent operation
6. Integration with alarm – output for connecting relay, buzzer or LED
7. Overvoltage protection – 48 V disconnection, 48 V connection
8. Programmable disconnection/connection thresholds via 7-segment LED display
9. Load disconnection delay function – 90 s, with warning
10. Charging switch mode – for LiFePO₄ via VE.Bus BMS

Technical specifications

• Maximum load current (continuous):100 A
• Peak current (30 s): 250 A
• Input voltage range: 24 – 64 V
• Switching type: MOSFET
• Own consumption:
  • On: 2 mA
  • Off or emergency shutdown: 1.5 mA
• IP rating:
  • Electronics: IP67 (flooded)
  • Terminals: IP00
• Dimensions: 62 x 123 x 120 mm
• Weight: 0.8 kg
• Temperature range: –40°C to +40°C at full load
• Terminal type: M6, tightening torque: 5 Nm
• Alarm output: max. 50 mA, short-circuit protected
• Alarm delay: 12 seconds
• Load disconnection delay: 90 s
• Re-connection delay: 30 s

Application scenarios

1. Autonomous homes and campers - prevention of deep discharge of the service battery
2. Marine systems - protection of navigation and lighting
3. Mobile power systems - where automatic load disconnection is required
4. Solar off-grid solutions - to protect the battery at night
5. LiFePO₄ cells – for safe operation via VE.Bus BMS

Technological features

• Programming via 7-segment LED display
  • The user selects the switch-off/on thresholds depending on the battery type
• Mode for LiFePO₄ batteries
  • BatteryProtect can be controlled via VE.Bus BMS and also used as a charging cut-off
• Function “alarm delay”
  • Prevents false triggering during short-term voltage drops (e.g. during engine start)
• Protection of connected consumers from overvoltage
• Safety – no sparks, no contacts, no relays