ePRO Plus Battery Monitor



ePRO PLUS High Precision Battery Monitor

The ePRO PLUS is our latest generation, highly advanced battery monitor. It consists of an intelligent shunt and a remote control display unit. The shunt has a Grid Optimized footprint for perfect integration with our DC Modular products.

This advanced battery monitor not only shows the true state of charge of your battery system. It also offers a large amount of additional features to optimally supervise your battery system and control external equipment. The ePRO PLUS is compatible with lead based and Lithium batteries (LiFePO4).

The ePRO PLUS can monitor up to three battery banks. The inputs for battery bank 2 and 3 can also be configured for other purposes, like mid-point voltage measurement, keyswitch input, setup lock or backlight control. The ePRO PLUS battery monitor can measure DC currents up to 600Amps (500Amp continuous) and voltages up to 70Vdc. So any lead- or lithium based battery from 12V up to 48V can be monitored.

The installation time is minimal, requiring only one supply wire to the intelligent shunt base and a single ‘QuickLink’ cable between the shunt base and the control/display unit (CDU). Additionally, the battery minus cable must be interrupted in order to insert the shunt into the high current circuit. The fused supply wire and the QuickLink cable are both included in the package, avoiding the need for a separate connection kit.

ePRO PLUS Alarm Output Expander (EN5093120 Optional)

The ePRO Plus 2-Channel Alarm Expander Kit adds two additional alarm relays to your ePRO Plus device via the Quicklink port. This kit can be used in case the application requires each alarm type to be assigned to a different relay contact.

The Alarm Expander also has the capability to be used as a relay contact. The Alarm Expander relays A and B are combined in order to control the ‘open (reset)’ and ‘close (set)’ coils from a dual coil magnetically latching contactor. Which relay contact to use for controlling the contactor coils, depends on whether the contactor needs to operate in a Normally Open (NO) or Normally Closed (NC) configuration.


ePRO Plus (Part No: EN55050)
Supply voltage range7..70Vdc
Supply current (@ 12V/ 24V/48V)10mA / 6mA / 5mA
Input voltage range main battery (+B1)7..70Vdc1)
Input voltage range second & third battery (+B2, +B3)1..70Vdc
Input current range-600..+600A2)
Battery capacity range10..10000Ah
Operating temperature range-20..+50°C
Storage temperature range-30..+70°C
Readout resolution:
Voltage (0..70V)± 0.01V
Current (0..10A)± 0.01A
Current (10..100A)± 0.1A
Current (100..600A)± 1A
State of Charge (0..100%)± 1%
Time remaining (0..24hrs)± 1min
Time remaining (24..240hrs)± 1hr
Amphours (0..10000Ah)± 0.01Ah..10Ah (variable)
Power (0..42kW)± 0.01W..1kW (variable)
Temperature (-20°C..+50°C)± 0.5°C
Voltage measurement accuracy± 0.3%
Current measurement accuracy± 0.4%
Shunt dimensions:
Footprint100 x 100mm
Base height24.0mm
Total height64.5mm
Display dimensions:
Front panelØ 64.0mm
Body diameterØ 51.5mm
Total depth36.0mm
Protection classIP20 (CDU front panel only IP65)
StandardsCE certified (EMC Directive 2014/30/EU) including EN50498 Automotive EMC
ePRO Plus 2ch Alarm Output Expander Kit EN5093120
Communication bus typeePRO Plus QuickLink
Current consumption< 1mA
Relay A and B contact ratings8A / 250Vac or 8A / 30Vdc
Relay A and B dielectric strength4000Vac (1min.) between coil and contacts
Relay pulse time (contactor mode)approx. 750ms
Operating ambient temp-20 ... +50 °C
Dimensions (L x W x H)100 x 100 x 24mm


Enerdrive Part #Description
EN5092130Isolated Quicklink to USB interface kit. Includes Dashboard for Windows software for readout and setup of the ePRO PLUS.
EN5092030Isolated Quicklink to RS232 interface kit. Includes Dashboard for Windows software for readout and setup of the ePRO PLUS.
EN5055310 / EN5055340Temperature sensor kit 3m or 10m. Monitoring the battery temperature will result in an even more accurate state of charge prediction.
Combine the ePRO PLUS active shunt seamlessly with busbars and fuseholders from the DC Modular series. Create compact clusters of DC distribution products quickly, easily, and safely.

Note: Specifications subject to change without notice.