SKU: 99658048744

REC 2Q BMS wiring harness

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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
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 99658048744

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4.3 ★★★★★
Based on 12 reviews
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Talagand
San Leandro, US
★★★★★ 4
Reasonably adequate room divider
Size: 4 Panel-88'', Color: Beige
I'm reviewing this as I assemble it. Couple things: 1. I didn't expect as much assembly. I've ordered dividers before and they more-or-less came as one unit. Sometimes the panels needed screwing together. These require complete assembly and come largely as three rods: two make up vertical columns and snap together. Another one (called part "C") makes the horizontal columns and you have two of these per panel (one attaches to part "A" and the other part "B"). These parts are metal with a plastic shim. Using the wood screws to attach to part "C" is a real pain in the neck. There's not much holding the panel in place so it's a little tricky. One tactic I've found while I'm assembling that works for the initial connections from parts A and B to their respective "C" rods is to hold the screw in place with a screw driver and then rotating the rod around the screw. This will do a number on your hands if you aren't wearing gloves. This obviously doesn't work when completing the connection. Using a driller driver on this is really near impossible because there isn't anything you can use to secure it in place. You can use it on the first panel, but as it gets longer, it becomes increasingly difficult and because it isn't wood, it's really tight. I considered drilling larger pilot holes but since there are only 4x4=16 screws I need to screw in, I just decided to use my screw driver to complete it. 2. Also related to assembly. When completing the panels (attaching parts "A" and "B" to parts "C" that have the cloth cover on it), you have to be careful that when you tighten that side that it isn't loosening the other side. Because the pilot holes are so tight, you can end up rotating the rod, which rotates it in the same direction as looser on the original side. Having someone hold the "C" rod in place while you screw it in is probably the easiest approach. I didn't have a 2nd person, so I just had to keep flipping back and forth and tightening both sides as I screwed it in. Not the worlds biggest deal, but annoying nonetheless. 3. The way the instructions are written, they seem to suggest building this thing progressively; that is, you do panel 1, then 2, connect them together, then do 3 and connect it, etc. I took a different route that I suspect saved me quite a bit of trouble, and I assembled all four panels first and THEN connected everything together. 4. For the love of God make sure you check that the plastic tip is on the same side for every panel. Otherwise, you have to take one side apart again and reverse it. On the bright side, if this happens, you've essentially bored out the pilot holes to be the correct size... which is having me question if I shouldn't have just bored them out to the appropriate width in the first place. 5. Attaching all of the panels together is also an enormous pain in the ass unless you happen to have an 88" long elevated surface. Attaching the legs either requires you to elevate one side, which will invariably twist the inexplicably cheap material in the bottom connectors... or you can attach them sideways... or you can put this thing upright, having two people hold the panels in place while you use the allen wrench to tighten the bolts on the underside. None of those are particularly great options. NOW on to the utility itself. 1. The panels do let some light through (I didn't believe their advertising, and that was one of the reasons that I bought beige, is that I wanted it to not be too dark). They aren't transparent though, so it isn't that far off from their description. They functionally work great, and keep the mess of wires hidden and when I'm sitting at my desk, actually reflect quite a bit of light into my office. Great! 2. My wife has described these as "the most hideous piece of furniture ever conceived of by man." So it does not have spouse approval factor. Granted, she will seldom be in my office area, so that isn't the end of the world. 3. These are really hard to align in a way that doesn't look a little tacky. There are some plastic connectors but they don't do a bang up job of keeping these in place. Each panel is slightly tilted and it's... quite obvious. I may at some point make my own improvements to these to help make them more level. It's not a particularly expensive product so I wasn't expecting much so it's fine and I'm not going to ding them on the rating because of it. All said, would I buy this product again? Probably not. It's assembly was ~90 minutes which is about 75 minutes longer than I was anticipating spending on this (not including the 5 minute writeup that I'm doing here). But am I going to return it? Also no, if for no other reason I'd be just as annoyed taking it apart and putting it in the original box to return it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2023
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Verified Purchase
Susan R.
Battle Creek, US
★★★★★ 5
Great value for price. Cute, lightweight. Could be used anywhere.
Size: 3 Panel, Color: White
Nice, lightweight. Good value for price. It's exactly what I needed for my hallway to keep my cats separate from each other. I used two zip ties to eyescrews in door trim and it opens up perfect to wall. Warm air gets thru and cats can see out/in. But can't get under or over. It's perfect for my use!!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2025
E
Verified Purchase
emily a hurst
Natrona Heights, US
★★★★★ 5
Great seller and really nice items!
Size: 6 Panel, Color: White
These room dividers are really lovely. They are great quality and just perfect for providing privacy in a sunroom while still allowing light in to keep the room sunny. I highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
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Verified Purchase
Lisa K.
Draper, US
★★★★★ 5
Nice divider!
Size: 4 Panel, Color: White
I use this as a "barrier" to keep my cat out of the guest room. I don't have to close the door anymore because the divider allows light and air through. Adds a nice touch to the decor, as well. Very lightweight and serves its purpose.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
J
Verified Purchase
Just_a_Cat_Girl
Los Angeles, US
★★★★★ 4
Good Room Divider
Size: 4 Panel, Color: White
This room divider worked great to mask my "utility area" in my living room because I'm low on storage space. It's functional and pleasing to the eye, but the quality could be better as there were pieces of debris on the unit and fraying strings. It also can tip over if not positioned just right. I do like the versatility of it though because even though it's a four panel I can fold in one of the panels and use the other three. Overall I like it, the price could be lower based on the quality but its good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025

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