REC 2Q is now available in North America

Introducing the REC 2Q Series 5-16S professional grade BMS The REC 2Q is the next step in the REC BMS evolution. Don’t trust your safety and expensive battery system to a cheap or repurposed BMS! Designed for medium to high capacity off grid, marine, RV and ESS applicationsIncorporates new ADC hardware for even more precise […]

New REC Sample Wiring Diagrams Posted

New Active and SI-Q series diagrams have been posted to the “Downloads” section that show a 2P4S and 2P8S cell configuration as requested by many people. They have also been updated with the more popular Cerbo and new PreCharge V3 model. These were all created using or the online version called Both […]

REC Active BMS 2.9.0 Firmware update

REC has just released an update to the 2.8.1 release that addresses a RS485 bug that affects temperatures. It is now available for download, along with a updated manual on our “Downloads” page REC Active 2.9.0 BMS release Notes It can be downloaded here:

REC Active BMS firmware Update 2.8.1

REC has now released version 2.8.1 firmware update for the REC Active BMS.  This model does not sync to its serial number and can be installed on any recent model Active BMS.  There are 2 versions of this release, so read below to ensure you install the correct version.  It can be downloaded here: […]

REC BMS WIFI module firmware update 1.6 now Released

Just released! Firmware update 1.6 includes a couple of new user features but really improves the stability of the LCD module communications. Download it and the updated manual from here:

REC Wifi Module Update 1.5.8

REC has now released its latest software update for the REC BMS WiFi module.  There are versions for both the 1.2 and 2.0 boards so check the “Firmware” page before downloading. The files are located here on the REC North America Site: And a quick video tutorial can be found here: Update Notes […]

REC BMS updated Inverter Support List

REC is continually adding new CANBus inverter support. They are also committed to extending that support, so if you have a CANBus enabled inverter and can get a hold of the PGN and protocol for interfacing please get back to us about including your inverter in the growing list. REC does not support RS485 integration […]

All new drawings files are now available

We have added several new configurations to our sample sketches and updated many so make sure you grab the latest version when designing your system. Remember, these are samples only and in no way supersede good wiring practices or the Manufacturers manuals. Use at your own risk.