SKU: 19815615937

REC 2Q BMS wiring harness

Sale price$95.72 Regular price$106.36
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

REC 2Q BMS wiring harnessREC 2Q BMS Wiring Harness: Precision Connectivity for Advanced Battery Management Engineered for Seamless Integration with REC 2Q BMS Systems The REC 2Q BMS wiring harness is a purpose built cable assembly designed to connect the REC 2Q Battery Management System to your lithium battery bank with accuracy and reliability. This harness eliminates the guesswork and potential faults of generic wiring, providing labelled, pre configured connections that

REC 2Q BMS Wiring Harness: Precision Connectivity for Advanced Battery Management

Engineered for Seamless Integration with REC 2Q BMS Systems

The REC 2Q BMS wiring harness is a purpose-built cable assembly designed to connect the REC 2Q Battery Management System to your lithium battery bank with accuracy and reliability. This harness eliminates the guesswork and potential faults of generic wiring, providing labelled, pre-configured connections that streamline installation and enhance system integrity. Whether you are commissioning a new off-grid energy storage system, upgrading an existing setup, or replacing a damaged harness, this assembly ensures your BMS communicates effectively with cells, sensors, and external devices.

In complex DC power systems, signal integrity is critical. Poor-quality or improvised wiring can introduce noise, voltage drops, and intermittent connections that compromise battery monitoring and protection. The REC 2Q harness uses high-quality connectors and clearly identified conductors to maintain stable data transmission and accurate cell voltage readings, reducing the risk of BMS faults and system downtime.

Key Features at a Glance

  • Pre-assembled connectors for all five 2Q BMS ports, eliminating wiring errors
  • Labelled cell sense wires for 4 to 16 lithium cells, simplifying termination
  • Integrated CAN Bus lead with Weipu SP13 connector for Victron and other compatible devices
  • Dual DS18B20 digital temperature sensors for precise thermal monitoring
  • Shunt sense cable with 4mm lugs for accurate current measurement
  • Remote ON/OFF switch and configurable I/O wires for external control and alarms
  • Spare RS485 connector included for custom industrial interfaces

Complete Connectivity for Your BMS

This harness covers every interface on the REC 2Q BMS, ensuring you have the right connections from the start. The CELLS connector provides 17 labelled wires (Cell 1- to Cell 16+) plus Pack - and Pack + power supply leads, all cut to a 2-metre length for flexible routing within your battery enclosure. A dedicated pre-charge wire is also included, supporting safe system startup without the need for additional components.

The Isens Tsens connector features two DS18B20 digital temperature sensors and a shunt sense cable terminated with 4mm lugs. The temperature sensors allow the BMS to monitor cell or ambient temperatures at two points, enabling precise thermal management and protection. The shunt sense cable connects directly to a battery shunt, with the "+" lug clearly marked for the battery side, ensuring correct polarity and reliable current data.

CAN Bus and Communication Integration

The RS485 CAN T Cp connector includes a 0.5-metre CAN Bus lead terminated with a Weipu SP13 circular connector. This interface is commonly used to link the BMS with Victron GX devices, inverters, and other CAN-enabled equipment. A termination jumper is pre-installed on the "T" pins, simplifying network setup. For RS485 communication, the harness provides a spare connector with pins on the RS485-0 port, allowing installers to wire a custom interface for industrial RS485 networks without sourcing proprietary plugs.

Note: While the CAN lead uses a Weipu SP13 connector, many inverters and controllers require an RJ45 connection. A separate CAN Bus adapter cable (available from REC) may be needed to match your specific device pinout, as there is no universal standard for CAN RJ45 wiring.

Control and Monitoring Flexibility

The I/O connector brings out essential control and monitoring signals on a 1-metre cable. It includes a remote ON/OFF micro rocker switch, allowing convenient manual control of the BMS without accessing the unit directly. Additional labelled wires—OPTO RELAY IN, OPTO RELAY OUT, OC 1-, OC 1+, OC 2-, OC 2+—provide open-collector outputs and an opto-isolated relay interface for external alarms, contactors, or automation systems. This flexibility supports integration into larger energy management setups, from marine and RV applications to off-grid residential systems.

Built for Demanding Environments

All connectors are genuine TE Connectivity (AMP) parts, selected for their proven reliability in high-vibration and temperature-cycling conditions. The use of locking connectors prevents accidental disconnection, while the labelled wires reduce installation time and the potential for miswiring. This harness is suitable for use in mobile, marine, and stationary energy storage applications where dependable BMS operation is essential for battery safety and longevity.

Why Choose the REC 2Q Wiring Harness?

Using the correct wiring harness is a critical step in ensuring your REC 2Q BMS performs as designed. Generic or field-assembled cables often lack the proper connector housings, pin assignments, and wire gauges, leading to unreliable connections and potential damage to the BMS or battery cells. This harness is built to REC's specifications, providing a plug-and-play solution that protects your investment and reduces commissioning time.

By maintaining accurate cell voltage sensing, stable communication, and reliable temperature and current monitoring, this harness helps the BMS protect your lithium cells from over-voltage, under-voltage, over-temperature, and over-current conditions. It is an essential component for anyone serious about battery performance and safety.

Order Your REC 2Q BMS Wiring Harness Today

Equip your REC 2Q BMS with the connectivity it deserves. Whether you are building a new lithium battery system or maintaining an existing one, this wiring harness delivers the precision and reliability you need. Add to cart now and ensure your battery management system operates at its full potential.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 19815615937

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 1160 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
lucaberta
Fort Morgan, US
★★★★★ 5
An important book to read, and whose concepts MUSTbe put into practice
Format: Kindle
As an admirer of the work that Dan Sullivan and Benjamin Hardy have done individually, I was sure that a collaboration, two “whos” getting together, would be a good hit. And a good it it is! The issue with these kind of books is what happens immediately after one has finished reading them. The issue is to put things into practice, and change the way we do things. This requires thinking, and thinking is hard, and in most cases we do NOT dedicate time to thinking, so the concepts slide into the past, and no change happens. Time for me, and everyone, to change this default state. This review is just the start of a written reflection, a “thinking on paper” exercise, like my friend and great thinker Jean Moroney calls it. For me, it’s time to shift to my journal. For you, dear readers, it’s time to get this book and read it. Make Dan and Ben your “whos”. Now.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2021
D
Verified Purchase
Drew Lipold
Charlottesville, US
★★★★★ 5
A must read
Format: Kindle
Every entrepreneur should read this book at the beginning of their journey. “Who Not How”, provides valuable insight needed to allow you to grow your business.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026
W
Verified Purchase
Wally Bock
Bozeman, US
★★★★★ 5
If you’re a solo, Who Not How is a must-read
Format: Kindle
If you’re starting out as a solo, whether you’re a writer a lawyer a consultant, or whatever, Who Not How may be the most important book you can read if you want to have both a successful business and a successful life. Here’s why I think that’s true. Most people who go solo don’t start their business with bales of venture capital. Instead, we fund those first lean weeks or years with credit cards, second mortgages, and the forbearance of our friends. We’re lean by necessity. Naturally, in the beginning, we do just about everything ourselves. That’s good and necessary, but it can create a bad habit that’s reinforced by society. American culture lauds individual achievement. In school, we’re graded individually. The virtue of self-reliance is high on our list. The problem is that to grow and prosper we need to break that habit of “self-reliance at any price” and quit trying to do it all. When we face a new challenge, the need for a new website, for example, we naturally ask, “how can I do this?” We spend time climbing a learning curve to get to an acceptable level of performance. Asking, “who could help me with this” or who can do this for me” can make our businesses more successful and our life more satisfying. Let me share two examples from my business. I have a virtual assistant. Her name is Brenda, and she does a variety of administrative tasks that I used to do myself. She does them better, more consistently, and more efficiently than I would. And the fact that she does them frees me up to do the things I do best and contribute most to the success of my business. Another example. For years I did my bookkeeping. I learned bookkeeping for the first job I got after I left the Marines. I did OK with a paper-based system. But I decided that I wanted to take advantage of what technology had made possible, so I bought QuickBooks. First, I tried to master it. The bookkeeping part wasn’t a problem. But learning about and implementing the automated functions of the program frustrated me.  When I realized what was happening, I engaged a QuickBooks consultant to help me set the program up and review my books every quarter. The result: I used to spend frustrating hours not getting things quite right. Now, I spend about 15 minutes a day and an hour at the end of the month on my accounting. Both Brenda and my QuickBooks consultant do things that I’m capable of. But they do them better, and, because they do them, I have more time and bandwidth to spend on coaching people as they write their books. That’s what I’m good at and what I get paid for. And using others for those tasks frees up time for me to spend on recreation, recovery, and relationships. Those things make life sweet. If you’re a solo, that’s why you should buy Who Not How, read it, and put it to work. I suggest you buy the audio version, even if you also buy a print or ebook version. The audio version has some interviews with Dan Sullivan that don’t appear in the other versions. They will add value to your experience.  In a Nutshell If you’re a solo, buy Who Not How: The Formula to Achieve Bigger Goals Through Accelerating Teamwork by Dan Sullivan and Benjamin Hardy Then read it and put the book’s lessons to work.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2022
D
Verified Purchase
Denisse Villar
Cuba, US
★★★★★ 5
A soulful journey that blends adventure with spiritual wisdom
This book is part travelogue, part spiritual quest, and it kept me intrigued from start to finish. Paulo Coelho takes you along on his pilgrimage through Spain’s Camino de Santiago, sharing not only the physical challenges of the journey but also the inner lessons about faith, discipline, and self-discovery. The writing is simple yet thought-provoking, with moments that feel both mystical and deeply human. I found myself pausing often to reflect on his insights, this isn’t a quick read but one to savor slowly. The paperback is a nice, portable size with clear print, making it easy to take along or mark favorite passages. For anyone interested in spiritual growth, adventure, or reflective storytelling, this book feels both timeless and inspiring. Pro Tip: Keep a journal nearby, so many passages spark personal reflection that you’ll want to write down your own thoughts as you read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2025
H
Verified Purchase
henry Mos
Battle Creek, US
★★★★★ 5
sad moments, and other different mood changes throughout the ...
Format: Paperback
Throughout the story, characters gave me some outside thoughts that a normal book would not, they brought suspense, sad moments, and other different mood changes throughout the book that make this such a good book. Paulo is on a road for a change in life, with Petrus with him, they explore the road to Copenstela that include different feelings while they were on the road. Paulo is on a trip to find his sword but instead he realizes the trip isn't all about the sword, he is on a trip to finding the sword and along the way he rungs into life changing moments that make him forget about the sword and think more of what time of person he is. There was rarely any weaknesses throughout the book due to the fact that it always had my attention. Unlike other books that just catch people's attention in some chapters, these chapters have suspense, sad moments and epic moments throughout the book not only In some chapters. Chapters were not to long but also were not too short, different characters made huge impacts on the story leading the book to have more than one main character. I found this book to be very easy to word, there really wasn't any words I did not understand or also there was no sentences that I did not understand, I was able to read the book smoothly chapter by chapter leaving the whole book a positive outcome because I understood what was going on. The characters were some times against each other and in some chapters they worked together, this is a book that I know other people may be able to understand unlike other books that have some words or sentences that are sometimes hard to understand. I highly recommend this book, after reading this book it left me with a great experience giving me a positive look at the author of this book. This book gave different characters the lead on the chapters, it always had my attention and had some twist and turns that I would not be able to find in just any book. In my opinion, this book had rarely any negative points, this reading was always a time I was looking forward to on spending my time on, I know I can go to this author whenever I would like to read a good book that can catch my attention and I know what would be going on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 13, 2015

recommand products