REC Active BMS

12V Active balancing BMS

107 Topics 2 Followers

R

How to manage state of charge while on shore power
6/28/22, 5:24 PM • Rich 1/22/24, 9:46 PM

13

13
Posts

1.4k
Views

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Richard
1/22/24, 9:46 PM

I've created a Node-Red flow that solves this problem perfectly. It has a dashboard interfa...
R

Split Charge/Load busses setup
12/31/23, 4:25 PM • Ronald 1/4/24, 11:02 AM

12

12
Posts

251
Views

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Ronald
1/4/24, 11:02 AM

I wonder if there is an issue with the module 2 precharge unit. The 6 pin descriptions are ...
J

REC ABMS with split bus firmware - how to specify different discharge and charge temps?
12/26/23, 12:31 PM • John 1/3/24, 5:27 AM

6

6
Posts

145
Views

t

tine
1/3/24, 5:27 AM

Charge current is only set to 0 A when the temperature goes under the Under-temperature for charg...
G

BMS Contactor Switch Contactor/Switch Options
12/12/23, 11:41 AM • Geoff 12/26/23, 5:39 PM

6

6
Posts

116
Views

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Geoff
12/26/23, 5:39 PM

John,I considered the Blue Sea swtich - it's a good switch (I have one and like it), but for my L...
E

Correct Firmware to use for Two Contactor Configuration
12/5/23, 3:54 PM • Edward 12/7/23, 4:03 PM

2

2
Posts

135
Views

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Rick
12/7/23, 4:03 PM

In the 2.9.2 firmware update there is a file called bms_1A_Victron_v2_92_2_tasks.bin that should ...
E

Downgrading firmware
12/5/23, 3:57 PM • Edward 12/7/23, 3:58 PM

4

4
Posts

93
Views

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Rick
12/7/23, 3:58 PM

Yes, I have downgraded several times while testing with the PC software and RS485 cable, but have...
G

Pin Connections
11/22/23, 1:07 PM • Geoff 11/26/23, 6:09 PM

5

5
Posts

82
Views

G

Geoff
11/26/23, 6:09 PM

Rick,Thanks for the update - things make more senses now!One question - on the updated diagram sh...
R

REC ACTIVE BMS CAN-BUS Compatibility
11/15/23, 2:28 PM • Raymond 11/15/23, 2:28 PM

1

1
Posts

75
Views

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Raymond
11/15/23, 2:28 PM

I am installing a Rec Active BMS and I am concerned about the Can-Bus wiring or compatibity with ...
L

REC-BMS ABMS and Victron with Raspberry PI not Cerbo GX
8/16/22, 9:20 AM • Lindsay 11/12/23, 12:27 AM

5

5
Posts

615
Views

E

Edward
11/12/23, 12:27 AM

I'm running Venus OS on an RPi4, using the inexpensive Innomaker USB to CAN cable to talk to the ...
R

Will it work? 3P4S @ 690ah
2/11/23, 2:22 PM • Rance 10/30/23, 8:12 PM

7

7
Posts

314
Views

C

Cedar
10/30/23, 8:12 PM

@Chris yes, REC Active BMS. My system is 1120 ah, so only slightly over the recommended amount, b...
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REC-Active Firmware update
10/2/23, 2:12 PM • John 10/7/23, 11:10 AM

4

4
Posts

205
Views

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Rick
10/7/23, 11:10 AM

it is free to download off of our REC North America site. I already sent you a link to the ...
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How to download firmware
9/30/23, 1:26 PM • John 10/7/23, 10:58 AM

5

5
Posts

136
Views

R

Rick
10/7/23, 10:58 AM

@John Yes, the if you download the app there is no need for the thumb drive
J

REC Active BMS Not Ramping Down Near Top
9/6/23, 10:37 PM • Jamie 9/21/23, 6:14 AM

19

19
Posts

463
Views

B

Ben
9/21/23, 6:14 AM

You have the correct understanding. If you like 5% hysteresis, (restart at 95% SOC) you program ...
H

Working up design -- multiple questions
9/12/23, 11:45 AM • Harry 9/17/23, 1:08 PM

6

6
Posts

122
Views

R

Rick
9/17/23, 1:08 PM

and here is a link to a sample single relay Active BMS wiring diagram that might of interest htt...
J

REC Active BMS Wifi Module - Missing Pages After Firmware Upgrade
9/5/23, 10:28 AM • Jamie 9/8/23, 6:31 PM

11

11
Posts

416
Views

J

Jamie
9/8/23, 6:31 PM

Yep... I was confused.To share my confusion in a way which may help others... when I originally r...
M

Beginners Questions about my 2P4S setup
8/4/23, 9:20 AM • Miro 8/10/23, 8:25 AM

5

5
Posts

173
Views

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Rick
8/10/23, 8:25 AM

The EVE cells are proving to be a good cell and so long as they are well matched you shouldnt hav...
M

Does yours work? - Victron/CerboGX NOT Calculating (Capacity, Consumed, and Remaining Time)
7/26/23, 7:12 PM • Mike 8/10/23, 4:47 AM

2

2
Posts

126
Views

B

Ben
8/10/23, 4:47 AM

The GX is not the device that calculated the "remaining time". In setup with a Victron shunt, or...
M

How to wire Victron compatible with seperate charge and discharge relays
7/26/23, 4:25 PM • Miro 8/2/23, 6:18 AM

8

8
Posts

216
Views

M

Miro
8/2/23, 6:18 AM

I know, that when I will install the inverter I need the precharge module. I just wanted to be su...
M

New firmware version not allowing configuring of Relay 1?
5/27/23, 11:21 PM • Matthew 8/2/23, 6:06 AM

6

6
Posts

161
Views

B

Ben
8/2/23, 6:06 AM

@Mattahh you have a WIFI module now? relay 1 the cable is labeled as CH (charge) The M...
S

From what serial number did REC Active BMS get the CAN BUS module?
6/1/23, 4:14 AM • Steinar 6/12/23, 4:53 PM

3

3
Posts

102
Views

S

Steinar
6/12/23, 4:53 PM

Tanks for info and how to check. I opend the box and found the ISO1050 at (U5).
c

what is the balancing capacity?
5/16/23, 5:03 AM • carl 5/17/23, 3:12 AM

3

3
Posts

94
Views

c

carl
5/17/23, 3:12 AM

I slowly see the lowest voltage rising. From my calculations, the balancing current per cell can ...
J

Error 10 - Did I bork my BMS?
12/5/22, 1:40 PM • Jeremy 4/26/23, 12:44 PM

6

6
Posts

330
Views

R

Rick
4/26/23, 12:44 PM

Those fuses protect the highly sensitive ADC circuitry and wires can not be connected or removed ...
T

2 pcs A-BMS on same CAN-BUS network.
4/16/23, 4:04 AM • Trond 4/20/23, 2:25 AM

2

2
Posts

73
Views

T

Trond
4/20/23, 2:25 AM

I did get an reply from Tine about this. And from my understanding all BMS`s send ID 0x3.. ...
b

TMIN - Under-temperature charging disable (firmware v 2.6)
3/16/23, 7:55 AM • bonsys 3/16/23, 9:16 AM

4

4
Posts

72
Views

R

Richard
3/16/23, 9:16 AM

No, its a setup screen in the \"Tasks\" tab of the WiFi module, with several parameters and alarm...
S

PROBLEM WITH SD CARD, LOGGING IS DISABLED
1/17/23, 9:29 AM • SV 1/26/23, 4:34 AM

2

2
Posts

152
Views

B

Ben
1/26/23, 4:34 AM

You can reset the wifi, holding the switch in the wifi unit 20 seconds?? (I dont ave the exact in...
R

bms 10 red led flashes,
1/17/23, 10:23 AM • Ronald 1/23/23, 9:34 AM

3

3
Posts

180
Views

R

Ronald
1/23/23, 9:34 AM

Thanks for the reply you are correct i replaced the bms and bingo was online. Now the next cha...
R

RS-485 DB9 Connector Pin Assignments
8/30/22, 12:48 PM • Rich 12/8/22, 7:45 AM

4

4
Posts

701
Views

s

skrap
12/8/22, 7:45 AM

Has anyone found an alternative RS485 to USB cable/adapter for the REC-BMS? I was hoping to buy ...
A

REC ABMS not recharging after reaching full charge
10/20/22, 5:11 PM • Adam 10/27/22, 10:13 AM

7

7
Posts

646
Views

A

Adam
10/27/22, 10:13 AM

I turned the MP3k back on and it did eventually begin to ramp down, however my cells were driftin...
A

REC Pre-Charge module manual and/or wiring diagram
10/24/22, 9:06 AM • Adam 10/26/22, 9:53 AM

3

3
Posts

316
Views

R

Richard
10/26/22, 9:53 AM

Awesome, I can take it off of my Todo list :)
T

2 REC Active in Parallel batteries
4/30/21, 6:40 AM • TAS 10/26/22, 5:56 AM

15

15
Posts

3.4k
Views

R

Richard
10/26/22, 5:56 AM

That was a typo. The REC Active BMS is a standalone unit and if it were to be installed in a par...
D

ABMS to control alternator field with a twist
10/9/22, 6:21 AM • David 10/21/22, 2:36 PM

10

10
Posts

415
Views

R

Richard
10/21/22, 2:36 PM

David, I think this post may help with your questions. https://www.offgridsoftwaresolutions...
D

ABMS with Smart Shunt
10/6/22, 1:49 PM • David 10/13/22, 5:33 PM

5

5
Posts

396
Views

D

David
10/13/22, 5:33 PM

For the record, it is possible to drill and tap the back side of a Victron shunt to accept additi...
R

Small Boat BMS/LFP with Backup
9/29/22, 6:40 PM • Rick 10/3/22, 12:12 PM

13

13
Posts

717
Views

R

Rick
10/3/22, 12:12 PM

Revision 10-04-2022 which is 99% there.
T

Regarding CAN bus regulated charging.
7/5/22, 2:47 AM • Trond 9/28/22, 2:06 PM

28

28
Posts

3.2k
Views

n

nebulight
9/28/22, 2:06 PM

mine is my username at gmail .com If you want to send them over. I sent REC an email but still wa...
n

Active BMS Fireware updates?
9/24/22, 4:29 PM • nebulight 9/26/22, 12:26 PM

5

5
Posts

401
Views

n

nebulight
9/26/22, 12:26 PM

Thanks for the explanation. I\'ve reached out to them. Thank you!
n

REC-BMS and Wakespeed on BMS-CAN on Cerbo?
9/22/22, 10:50 AM • nebulight 9/26/22, 5:08 AM

3

3
Posts

382
Views

R

Richard
9/26/22, 5:08 AM

You beat me to it. With the new integration of the WS500 it now needs to be connected on the VE ...
P

Adding a pin to the main connector
2/21/21, 10:39 AM • Patrick 8/17/22, 11:36 AM

12

12
Posts

2.1k
Views

L

Lindsay
8/17/22, 11:36 AM

Does anyone have a wiring diagram for the ABMS and the REC BSLRD and the Blue Sea 7713? thank...
P

ABYC and REC
8/12/22, 6:41 AM • Paul 8/12/22, 6:41 AM

1

1
Posts

387
Views

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Paul
8/12/22, 6:41 AM

As I read the ABYC requirements there seems to be a need for an Alarm before disconnect, and poss...
s

controlling CERBO GX with REC BMS hibernate switch?
6/29/22, 11:16 AM • salvey 6/29/22, 11:16 AM

9

9
Posts

983
Views

R

Richard
6/29/22, 11:16 AM

From Tine at REC BMS head office: It is programmed as a charge control, but we can custom re-p...
M

REC active BMS wiring harness wired wrong?
6/25/22, 3:31 PM • Matthew 6/25/22, 3:36 PM

2

2
Posts

451
Views

R

Richard
6/25/22, 3:36 PM

Yes, it\'s not clear but that image is from the wire side, not the pin side of that connector.

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REC Active BMS

How to manage state of charge while on shore power 6/28/22, 5:24 PM • Rich 1/22/24, 9:46 PM

Split Charge/Load busses setup 12/31/23, 4:25 PM • Ronald 1/4/24, 11:02 AM

REC ABMS with split bus firmware - how to specify different discharge and charge temps? 12/26/23, 12:31 PM • John 1/3/24, 5:27 AM

BMS Contactor Switch Contactor/Switch Options 12/12/23, 11:41 AM • Geoff 12/26/23, 5:39 PM

Correct Firmware to use for Two Contactor Configuration 12/5/23, 3:54 PM • Edward 12/7/23, 4:03 PM

Downgrading firmware 12/5/23, 3:57 PM • Edward 12/7/23, 3:58 PM

Pin Connections 11/22/23, 1:07 PM • Geoff 11/26/23, 6:09 PM

REC ACTIVE BMS CAN-BUS Compatibility 11/15/23, 2:28 PM • Raymond 11/15/23, 2:28 PM

REC-BMS ABMS and Victron with Raspberry PI not Cerbo GX 8/16/22, 9:20 AM • Lindsay 11/12/23, 12:27 AM

Will it work? 3P4S @ 690ah 2/11/23, 2:22 PM • Rance 10/30/23, 8:12 PM

REC-Active Firmware update 10/2/23, 2:12 PM • John 10/7/23, 11:10 AM

How to download firmware 9/30/23, 1:26 PM • John 10/7/23, 10:58 AM

REC Active BMS Not Ramping Down Near Top 9/6/23, 10:37 PM • Jamie 9/21/23, 6:14 AM

Working up design -- multiple questions 9/12/23, 11:45 AM • Harry 9/17/23, 1:08 PM

REC Active BMS Wifi Module - Missing Pages After Firmware Upgrade 9/5/23, 10:28 AM • Jamie 9/8/23, 6:31 PM

Beginners Questions about my 2P4S setup 8/4/23, 9:20 AM • Miro 8/10/23, 8:25 AM

Does yours work? - Victron/CerboGX NOT Calculating (Capacity, Consumed, and Remaining Time) 7/26/23, 7:12 PM • Mike 8/10/23, 4:47 AM

How to wire Victron compatible with seperate charge and discharge relays 7/26/23, 4:25 PM • Miro 8/2/23, 6:18 AM

New firmware version not allowing configuring of Relay 1? 5/27/23, 11:21 PM • Matthew 8/2/23, 6:06 AM

From what serial number did REC Active BMS get the CAN BUS module? 6/1/23, 4:14 AM • Steinar 6/12/23, 4:53 PM

what is the balancing capacity? 5/16/23, 5:03 AM • carl 5/17/23, 3:12 AM

Error 10 - Did I bork my BMS? 12/5/22, 1:40 PM • Jeremy 4/26/23, 12:44 PM

2 pcs A-BMS on same CAN-BUS network. 4/16/23, 4:04 AM • Trond 4/20/23, 2:25 AM

TMIN - Under-temperature charging disable (firmware v 2.6) 3/16/23, 7:55 AM • bonsys 3/16/23, 9:16 AM

PROBLEM WITH SD CARD, LOGGING IS DISABLED 1/17/23, 9:29 AM • SV 1/26/23, 4:34 AM

bms 10 red led flashes, 1/17/23, 10:23 AM • Ronald 1/23/23, 9:34 AM

RS-485 DB9 Connector Pin Assignments 8/30/22, 12:48 PM • Rich 12/8/22, 7:45 AM

REC ABMS not recharging after reaching full charge 10/20/22, 5:11 PM • Adam 10/27/22, 10:13 AM

REC Pre-Charge module manual and/or wiring diagram 10/24/22, 9:06 AM • Adam 10/26/22, 9:53 AM

2 REC Active in Parallel batteries 4/30/21, 6:40 AM • TAS 10/26/22, 5:56 AM

ABMS to control alternator field with a twist 10/9/22, 6:21 AM • David 10/21/22, 2:36 PM

ABMS with Smart Shunt 10/6/22, 1:49 PM • David 10/13/22, 5:33 PM

Small Boat BMS/LFP with Backup 9/29/22, 6:40 PM • Rick 10/3/22, 12:12 PM

Regarding CAN bus regulated charging. 7/5/22, 2:47 AM • Trond 9/28/22, 2:06 PM

Active BMS Fireware updates? 9/24/22, 4:29 PM • nebulight 9/26/22, 12:26 PM

REC-BMS and Wakespeed on BMS-CAN on Cerbo? 9/22/22, 10:50 AM • nebulight 9/26/22, 5:08 AM

Adding a pin to the main connector 2/21/21, 10:39 AM • Patrick 8/17/22, 11:36 AM

ABYC and REC 8/12/22, 6:41 AM • Paul 8/12/22, 6:41 AM

controlling CERBO GX with REC BMS hibernate switch? 6/29/22, 11:16 AM • salvey 6/29/22, 11:16 AM

REC active BMS wiring harness wired wrong? 6/25/22, 3:31 PM • Matthew 6/25/22, 3:36 PM

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Latest topics

REC ABMS - integration with heltec 4s Active Balancer

WS500 Field Stuck High

Two (related) issues after updating to 2.9.6 firmware

Unable to install WiFi Module SW 1.6.3

TimeToGo additional message for Victron D-BUS

Latest posts

ABMS lilliputian switch

Troubleshooting Unstable ABMS-WiFi Connectivity on Boat

REC ABMS - integration with heltec 4s Active Balancer

REC ABMS - integration with heltec 4s Active Balancer

Two (related) issues after updating to 2.9.6 firmware

Forum statistics

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Sean

ArneS

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Iain

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Most liked authors

Richard

Rick

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Bill

How to manage state of charge while on shore power
6/28/22, 5:24 PM • Rich 1/22/24, 9:46 PM

Split Charge/Load busses setup
12/31/23, 4:25 PM • Ronald 1/4/24, 11:02 AM

REC ABMS with split bus firmware - how to specify different discharge and charge temps?
12/26/23, 12:31 PM • John 1/3/24, 5:27 AM

BMS Contactor Switch Contactor/Switch Options
12/12/23, 11:41 AM • Geoff 12/26/23, 5:39 PM

Correct Firmware to use for Two Contactor Configuration
12/5/23, 3:54 PM • Edward 12/7/23, 4:03 PM

Downgrading firmware
12/5/23, 3:57 PM • Edward 12/7/23, 3:58 PM

Pin Connections
11/22/23, 1:07 PM • Geoff 11/26/23, 6:09 PM

REC ACTIVE BMS CAN-BUS Compatibility
11/15/23, 2:28 PM • Raymond 11/15/23, 2:28 PM

REC-BMS ABMS and Victron with Raspberry PI not Cerbo GX
8/16/22, 9:20 AM • Lindsay 11/12/23, 12:27 AM

Will it work? 3P4S @ 690ah
2/11/23, 2:22 PM • Rance 10/30/23, 8:12 PM

REC-Active Firmware update
10/2/23, 2:12 PM • John 10/7/23, 11:10 AM

How to download firmware
9/30/23, 1:26 PM • John 10/7/23, 10:58 AM

REC Active BMS Not Ramping Down Near Top
9/6/23, 10:37 PM • Jamie 9/21/23, 6:14 AM

Working up design -- multiple questions
9/12/23, 11:45 AM • Harry 9/17/23, 1:08 PM

REC Active BMS Wifi Module - Missing Pages After Firmware Upgrade
9/5/23, 10:28 AM • Jamie 9/8/23, 6:31 PM

Beginners Questions about my 2P4S setup
8/4/23, 9:20 AM • Miro 8/10/23, 8:25 AM

Does yours work? - Victron/CerboGX NOT Calculating (Capacity, Consumed, and Remaining Time)
7/26/23, 7:12 PM • Mike 8/10/23, 4:47 AM

How to wire Victron compatible with seperate charge and discharge relays
7/26/23, 4:25 PM • Miro 8/2/23, 6:18 AM

New firmware version not allowing configuring of Relay 1?
5/27/23, 11:21 PM • Matthew 8/2/23, 6:06 AM

From what serial number did REC Active BMS get the CAN BUS module?
6/1/23, 4:14 AM • Steinar 6/12/23, 4:53 PM

what is the balancing capacity?
5/16/23, 5:03 AM • carl 5/17/23, 3:12 AM

Error 10 - Did I bork my BMS?
12/5/22, 1:40 PM • Jeremy 4/26/23, 12:44 PM

2 pcs A-BMS on same CAN-BUS network.
4/16/23, 4:04 AM • Trond 4/20/23, 2:25 AM

TMIN - Under-temperature charging disable (firmware v 2.6)
3/16/23, 7:55 AM • bonsys 3/16/23, 9:16 AM

PROBLEM WITH SD CARD, LOGGING IS DISABLED
1/17/23, 9:29 AM • SV 1/26/23, 4:34 AM

bms 10 red led flashes,
1/17/23, 10:23 AM • Ronald 1/23/23, 9:34 AM

RS-485 DB9 Connector Pin Assignments
8/30/22, 12:48 PM • Rich 12/8/22, 7:45 AM

REC ABMS not recharging after reaching full charge
10/20/22, 5:11 PM • Adam 10/27/22, 10:13 AM

REC Pre-Charge module manual and/or wiring diagram
10/24/22, 9:06 AM • Adam 10/26/22, 9:53 AM

2 REC Active in Parallel batteries
4/30/21, 6:40 AM • TAS 10/26/22, 5:56 AM

ABMS to control alternator field with a twist
10/9/22, 6:21 AM • David 10/21/22, 2:36 PM

ABMS with Smart Shunt
10/6/22, 1:49 PM • David 10/13/22, 5:33 PM

Small Boat BMS/LFP with Backup
9/29/22, 6:40 PM • Rick 10/3/22, 12:12 PM

Regarding CAN bus regulated charging.
7/5/22, 2:47 AM • Trond 9/28/22, 2:06 PM

Active BMS Fireware updates?
9/24/22, 4:29 PM • nebulight 9/26/22, 12:26 PM

REC-BMS and Wakespeed on BMS-CAN on Cerbo?
9/22/22, 10:50 AM • nebulight 9/26/22, 5:08 AM

Adding a pin to the main connector
2/21/21, 10:39 AM • Patrick 8/17/22, 11:36 AM

ABYC and REC
8/12/22, 6:41 AM • Paul 8/12/22, 6:41 AM

controlling CERBO GX with REC BMS hibernate switch?
6/29/22, 11:16 AM • salvey 6/29/22, 11:16 AM

REC active BMS wiring harness wired wrong?
6/25/22, 3:31 PM • Matthew 6/25/22, 3:36 PM