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REC Master/Slave Parallel Pack Kit Builder

Build your REC Master/Slave BMS system as a kit and save 5% on all accessories!

Use the example diagram on the left as a guide to select the hardware you need for your application using the drop-down options below.

The Master brings it all together for larger systems and allows multiple Q or SI Series BMS’s to work together. Systems can be configured in either a series configuration to provide high voltage solutions or in parallel to provide multiple bank redundancy, or even series parallel for large high voltage systems. The Q Series BMS forms the foundation for higher voltage systems and includes features such as passive balancing, battery SOH and SOC and both RS485 and CANBus communications, with optional an LCD touchscreen display, and PC or WiFi options for configuration and monitoring.

REC BMS Master 9M:

The REC BMS Master supports many battery chemistries including:

Li-PO, LiFePO4, LiFeYPO4, LiCoO2, LiMnNiCo and LiMnO4 Lithium-Ion chemistry
Master + max 15 Slave combination (max 240 cells)
compatible with all REC BMS units
single cell voltage measurement (0.1 – 5.0 V, resolution 1 mV)
single cell internal resistance measurement
single cell under/over voltage protection
SOC and SOH calculation
over temperature protection (up to 3 temperature sensors per Slave unit)
under temperature charging protection
passive cell balancing up to 1.3 A per cell with LED indication
shunt current measurement (resolution 10 mA @ +/- 300 A)
3 galvanically isolated user defined multi-purpose inputs/outputs
4 programmable relays (normally open and normally closed option)
Available in 12V, 24V or 48V standard galvanically isolated supply (Custom voltages upon request)
galvanically isolated RS-485 and CAN communication protocol
error LED + buzzer indicator
internal battery powered real time-clock (RTC)
PC user interface or WiFi module for changing the settings and data-logging (optional accessory)
LCD touch display for monitoring (optional accessory)
CANBus drivers for many Inverters (Victron is standard)
hibernate switch


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SKU: REC Master Parallel Kit Categories: ,