Solar Battery Management System

To maximise LiFePO4 battery lifespan the cells in the battery must be kept within the voltage window as recommended by the manufacturer.    This requires a Battery Management System (BMS) that monitors the cell voltages and:

  • can balance the state of charge of the cells 
  • is able to inhibit charging to prevent cell overvoltage
  • is able to inhibit discharging to prevent cell undervoltage
  • is able to activate the above charge and discharge mechanisms in event of over/under temperature or other system issues
  • is configured (wired) to support long-term storage of the battery system with leakage currents in the micro-amperage range.
  • record occurrences of cell voltage exceeding low/high voltage limits  (note that our systems are designed to prevent this ever occurring)

4-Cell Active BMS

The REC Active BMS for 4 cells (nominal 12V battery) is a high end unit which, in conjunction with Solar4RVs designed opto-isolated adaptors and wiring guidelines provides all the necessary functionality to meet the LiFePO4 cell manufacturer's requirements for the BMS.  

16-Cell BMS

The 16-cell unit accommodates from 5 to 16 cells and has proven "plug-and-play" compatibility with SMA Sunny Island inverters (over 200 units are in operation with SMA inverters).

Accessories

Bi-stable relay drivers (high/low side), pre-charge resistors, relays are available.

Support:   We support the REC BMS units across Australiia.   For example the REC BMS units are used on the Diesel-Electric hybrid Greenline boats for which we provide support.  

We work closely with the manufacturer and can provide rapid responses to requests for support and firmware upgrades.   




Enerdrive ePro Plus Battery Monitor

With shunt and LCD display

RRP $475.00

$384.00
Enerdrive Smart Battery Guard 12/24v 40A IP66

Low voltage battery protection

$139.00
Enerdrive Smart Battery Guard 12/24v 60A IP66

Low voltage battery protection

$153.00
Victron Battery Balancer

Equalizes the state of charge of connected batteries

RRP $117.70

$99.00
Victron Battery Protect 48V-100A

Disconnects the battery from non-essential loads

RRP $236.50

$189.00

RRP $158.40

$139.95
Victron Smart Battery Protect 48V-100A

Disconnects the battery from non-essential loads

RRP $272.24

$217.00
Votronic Battery Monitor

100, 200 or 400A - Includes heavy duty link

Votronic Battery Protector 100 - 3078

100A bi-stable relay for low voltage protection

RRP $199.00

$181.50
Votronic Battery Protector 40 - 3075

40A bi-stable relay for low voltage protection

RRP $139.00

$97.90
Wi-Fi Module for REC BMS

Connect wirelessly to REC BMS

RRP $285.00

$266.00
REC Active Balancing BMS for 4 cells

Victron Compatibility Option

RRP $599.00

From $529.00

RRP $799.00

$749.00
REC BMS LCD Touch Display

Suitable for 7R BMS, Q 16S BMS, Active BMS

RRP $299.00

$269.00
REC Bluetooth Low Energy (BLE) module

Logs & connects the BMS to your smart phone/tablet

RRP $279.00

$249.00
REC Pre-charge Resistor and Relay 11-68V 2-11 Seconds 66R

Controlled inrush current flow for capacitive loads

RRP $89.00

$75.00

RRP $149.00

$139.00
$264.00
Relay Contactor SPST 500A 48VDC (32-95VDC) EV200ADANA with economiser

Use for battery isolation/disconnect switch

$352.00
BMS Current Sensor Shunt 200A 50mV

Suitable for 7R BMS, Q 16S BMS, Active BMS

$72.00
BMS Current Sensor Shunt 300A 50mV

Suitable for 7R BMS, Q 16S BMS, Active BMS

$72.00
BMS Current Sensor Shunt 500A 50mV

Suitable for 7R BMS, Q 16S BMS, Active BMS

$72.00