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 eLite Battery Monitor

With shunt and LCD display

RRP $378.00

$308.77
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

$136.00
Victron Battery Balancer

Equalizes the state of charge of connected batteries

RRP $117.70

$99.95
Victron Battery Management System BMS 12/200

Connect the alternator to Victron Smart Lithium

RRP $425.45

$383.00
Victron Battery Protect 48V-100A

Disconnects the battery from non-essential loads

RRP $236.50

$189.00

RRP $196.90

$157.00

RRP $79.20

$79.00
Victron Cyrix-ct Intelligent Battery Combiner KIT 12/24V-120A

Bidirectional voltage sensitive relay - Dual Battery Kit

RRP $158.40

$139.95
Victron miniBMS

Simple and low cost alternative to the VE.Bus BMS

RRP $88.18

$79.00
Victron Smart Battery Protect 48V-100A

Disconnects the battery from non-essential loads

RRP $272.24

$217.00
Victron Smart BMS CL 12/100

Protects the alternator against overload

RRP $369.00

$299.00
Victron VE.Bus BMS

Suits Victron Smart Lithium Batteries

RRP $210.52

$189.00

RRP $404.51

$364.00
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

RRP $599.00

$529.00

RRP $799.00

$749.00

RRP $799.00

$719.00
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
REC Cable DB9 to RJ45 for CAN-Bus (SMA)

for CAN-Bus to Sunny Island inverters

$20.00
$20.00
$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