REC Active BMS

Build your system as a kit and save! Active BMS Kit Builder

Active BMS for 12V Systems. Victron and WS500 compatible. Be sure to include the custom wiring harness with cell & relay wires, CAN and RS485 cables, temp. sensor wires (2), and remote ON/OFF switch, unless you are just replacing a unit or doing a custom installation.

Designed to provide unsurpassed battery management in 12 volt systems, the REC Active BMS delivers 2A cell equalizing with active balancing and synchronous flyback bidirectional energy transfer from cell to pack and pack to cell.

Features:

Li-PO, LiFePO₄, LiFeYPO₄, LiCoO₂, LiMnNiCo and LiMnO₄ Lithium-Ion chemistry
4 series connected cells per unit
high efficiency 2 A bi-directional active balancing (pack to cell and cell to pack)
IP65 protection enclosure, AMP 35 pin water resistant connector
2 – 5 V measuring range, 2 mV accuracy
up to 2 digital temperature sensors
shunt current measurement
robust and small design
galvanically isolated RS-485 and CAN communication protocol
two programmable fused relay output
two programmable fused digital output
ON/OFF switch
LED and buzzer status indication
bootloader
error LED + buzzer indicator
PC user interface for changing settings, data-logging and firmware update
compatible with REC LCD touch display for monitoring
compatible with Victron inverters for solar applications
Seamless CANbus integration with Wakespeed’s WS500 Advanced
Alternator Regulator

Microcontroller:

low power microcontroller RTC
custom made software with bootloader for remote firmware update
60 mW self power consumption with disabled CAN and all outputs

RS - 485 communication:

galvanically isolated RS-485 communication
Slave configuration
RS-485 driver primary side supply is activated with Master connection to save energy consumption
fully compatible with REC LCD touch display and PC user interface BMS Master control

Active Balancing:

2A cell equalizing with active balancing with synchronous flyback bi-directional energy transfer: cell to pack and pack to cell
top side and bottom side balancing prolong the cycle duration due to the weakest cell

Outputs:

two fused relay outputs with NO and NC pins
two fused galvanically isolated/non-isolated digital outputs with PWM option

Galvanically Isolated CAN:

galvanically isolated CAN
100, 125, 250, 500, 1 MHz bit-rate selection
message programming
disable option

Complete wiring of ABMS connector:

5 cells wires (l = 1m)
relays, digital output wires (l = 0.5m)
RS485 cable (l = 0.5m)
CAN cable (l = 0.5m)
remote ON/OFF switch (l = 1m)

$329.95

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Free shipping to the lower 48 on all orders over $ 250

Build your system as a kit and save! Active BMS Kit Builder

Features:

Li-PO, LiFePO₄, LiFeYPO₄, LiCoO₂, LiMnNiCo and LiMnO₄ Lithium-Ion chemistry
4 series connected cells per unit
high efficiency 2 A bi-directional active balancing (pack to cell and cell to pack)
IP65 protection enclosure, AMP 35 pin water resistant connector
2 – 5 V measuring range, 2 mV accuracy
up to 2 digital temperature sensors
shunt current measurement
robust and small design
galvanically isolated RS-485 and CAN communication protocol
two programmable fused relay output
two programmable fused digital output
ON/OFF switch
LED and buzzer status indication
bootloader
error LED + buzzer indicator
PC user interface for changing settings, data-logging and firmware update
compatible with REC LCD touch display for monitoring
compatible with Victron inverters for solar applications
Seamless CANbus integration with Wakespeed’s WS500 Advanced
Alternator Regulator

Microcontroller:

low power microcontroller RTC
custom made software with bootloader for remote firmware update
60 mW self power consumption with disabled CAN and all outputs

RS - 485 communication:

galvanically isolated RS-485 communication
Slave configuration
RS-485 driver primary side supply is activated with Master connection to save energy consumption
fully compatible with REC LCD touch display and PC user interface BMS Master control

Active Balancing:

2A cell equalizing with active balancing with synchronous flyback bi-directional energy transfer: cell to pack and pack to cell
top side and bottom side balancing prolong the cycle duration due to the weakest cell

Outputs:

two fused relay outputs with NO and NC pins
two fused galvanically isolated/non-isolated digital outputs with PWM option

Galvanically Isolated CAN:

galvanically isolated CAN
100, 125, 250, 500, 1 MHz bit-rate selection
message programming
disable option

Complete wiring of ABMS connector:

5 cells wires (l = 1m)
relays, digital output wires (l = 0.5m)
RS485 cable (l = 0.5m)
CAN cable (l = 0.5m)
remote ON/OFF switch (l = 1m)

Vendor	REC BMS
Type	Battery Charge Controllers
Tags	BMS , REC , REC BMS's , REC Products , REC-ACTIVE-BMS
Collections	Best Selling Products Newest Products REC BMS's REC Products

Controls Everything!

We have been using the REC BMS in conjunction with a Victron Multiplus and Wakespeed Regulator (alternator control) for a couple years now. The REC BMS communicates via CANbus with all of our charge and major discharge sources to ensure that the LiFePO4 house bank on our boat is properly managed. The system has been basically flawless. The only negative is the REC BMS is programmed to keep the house bank more or less at full charge even when we are away from the boat, I would prefer a storage mode that kept the bank at a lower state of charge but have not figured out how to do this with the REC.

This is great feedback. With the new Wi-Fi module REC should be able to add this functionality and hopefully, after the release of the new 2Q BMS they will consider this feature request.

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Above and beyond.

I had recently swapped out computers and lost my software key and software to monitor my WS500 in the swap. All that transferred was the Home Screen Icon. The team without hesitation looked me up and sent me a new key (or maybe my original one). I am now back up and running.

Thanks Gary! Glad your PC is back up and running :)

Great service

I faced a few issues but Rick was very helpful and available at all time.

I will definitely recommend this company.

Glad we got you sorted. Thanks for the great review!

worth the wait!

Amazing product & fantastic customer service from Rick @ REC NA / OGM.
Very happy customer!

After having built a lifepo4 battery with a mass produced JBD BMS, I knew I wanted something different when switching to EV. I had heard great things about REC from users of Electric Sailboats on Facebook. I wanted my BMS to be the best quality I could get.

The installation was very straightforward, and greatly simplified by the availability of prebuilt wiring harnesses. The features of the BMS are impressive - while I havent used it yet, the 2 opto outputs are very sophisticated in terms of software control, and I will surely find a use for them.

I'm working on using BMS CAN and fully integrating with Victron multiplus & cerboGX. The fact that Victron lists REC as a known-working integration gave me a lot of confidence in the solution.

I had sent emails (excessive emails!) to REC since January asking for details about the product and release date info. It's a great product, and I'm happy I waited for release.

OGM energy has been very responsive in answering inquiries, and shipped the product sooner than expected. Very pleased!

That's great news Brian. So glad you are happy with the new 2Q BMS. I think REC really hit a home run with this one!!

Fantastic service and an amazing high Quality product.

The setup and installation instructions are of the highest level.
Customer service was amazing; Rick was quick to help out when i inadvertently ordered the wrong harness and gave me a 100% refund.
I would recommend OGM anytime, a great company to do business with

Thanks Adrian. Glad you are up and running. :)

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REC Active BMS

Free shipping to the lower 48 on all orders over $ 250

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