All topics

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Preliminary sample displays and enclosures
6/25/23, 10:30 AM • Rick • Posted in Project Status 6/25/23, 10:30 AM

1

1
Posts

92
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R

Project Introduction
6/25/23, 12:15 AM • Rick • Posted in REC LCD and Blue Tooth Development Forum 6/25/23, 12:15 AM

1

1
Posts

19
Views
J

Alternator Warm - Wire #7 send 3.5 Amps!!??
6/18/23, 9:34 PM • Jeff • Posted in WS500 User Installation and Programming Questions 6/19/23, 2:32 AM

2

2
Posts

88
Views
W

Operating temperature range for 9M slave modules
6/12/23, 3:00 PM • William • Posted in REC Master Slave Large Scale Systems 6/12/23, 3:00 PM

1

1
Posts

27
Views
S

REC- BMS DB9 signal waveforms / +5v (pin 6) GND (pin 2) / random system shutdown w/ reboot
6/10/23, 10:19 AM • Scott • Posted in REC-BMS Programming and Configuration Questions 6/10/23, 10:19 AM

1

1
Posts

114
Views
J

Splicing New WS500 Harness
6/8/23, 1:12 PM • John • Posted in WS500 User Installation and Programming Questions 6/9/23, 1:21 AM

2

2
Posts

102
Views
J

P VAN Opt-2 Harness
6/5/23, 5:53 PM • John • Posted in WS500 User Installation and Programming Questions 6/6/23, 11:48 PM

8

8
Posts

130
Views
J

alternator, solar charging system A real mystery, no one can figure out why we are not able to charge from the alternators anymore.
6/4/23, 5:27 PM • Jay • Posted in WS500 Tips, Tricks and support 8/12/23, 10:01 AM

9

9
Posts

214
Views
R

How to read error log from REC Master BMS
6/2/23, 12:08 PM • Rick • Posted in REC BMS Tips and Tricks 6/7/23, 9:06 PM

2

2
Posts

163
Views
S

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

3

3
Posts

102
Views
M

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

6

6
Posts

161
Views
R

WS500 T-105 settings with Cerbo and MPPT
5/19/23, 9:51 AM • Rick • Posted in WS500 User Installation and Programming Questions 5/21/23, 6:54 PM

3

3
Posts

148
Views
c

what is the balancing capacity?
5/16/23, 5:03 AM • carl • Posted in REC Active BMS 5/17/23, 3:12 AM

3

3
Posts

94
Views
c

who is the boss? BMS or Multiplus?
5/11/23, 8:04 AM • carl • Posted in REC BMS to Victron VE Bus 5/15/23, 4:09 AM

4

4
Posts

181
Views
R

WS500 and Cerbo BMS-CAN vs VE-CAN when using a non-Victron BMS
5/5/23, 6:27 PM • Rick • Posted in WS500 Tips, Tricks and support 1/14/25, 12:47 PM

7

7
Posts

839
Views
S

REC BMS Voltage Setting for clean 100% SOC charge end.
5/4/23, 4:28 AM • Stefan • Posted in REC Q Series BMS 5/5/23, 6:09 AM

4

4
Posts

206
Views
T

REC Q Series BMS + WS500 + Victron + charge/discharge control
5/3/23, 9:16 PM • Thomas • Posted in REC Q Series BMS 6/11/23, 11:53 AM

6

6
Posts

178
Views
R

Email status
4/27/23, 12:47 AM • Rick • Posted in OGM Energy News 4/27/23, 12:47 AM

1

1
Posts

37
Views
R

Alternator Failed offshore
4/23/23, 7:03 PM • Ross • Posted in WS500 Tips, Tricks and support 4/25/23, 6:00 PM

7

7
Posts

166
Views
DR

Pinout for the 770680-4 connector...
4/19/23, 12:40 PM • D. Ryan • Posted in WS500 User Installation and Programming Questions 4/24/23, 11:33 AM

6

6
Posts

335
Views
T

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

2

2
Posts

70
Views
D

Erratic reading from current shunt
4/15/23, 2:26 PM • Darryl • Posted in REC Active BMS 5/20/24, 3:07 AM

31

31
Posts

692
Views
b

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

4

4
Posts

71
Views
n

REC Wifi Module 1.61 firmware release notes?
3/15/23, 9:56 AM • nebulight • Posted in REC Product Announcements 4/22/23, 1:43 PM

4

4
Posts

166
Views
B

WS500 Not Keeping Battery Topped Off
3/15/23, 9:16 AM • Brent • Posted in WS500 User Installation and Programming Questions 3/17/23, 7:36 PM

8

8
Posts

343
Views
N

WS 500 + Dedicated Shunt + Cerbo + REC-Q = 2x DC Power Reported
3/10/23, 9:39 AM • Nathaniel • Posted in WS500 User Installation and Programming Questions 3/16/23, 6:33 PM

6

6
Posts

146
Views
C

Problem rec bms shutting down due to low voltage at 3v fix
3/8/23, 3:31 AM • Clarence • Posted in REC SI Series BMS 10/23/23, 9:36 AM

6

6
Posts

338
Views
W

Connecting REC wifi module to the outside world?
3/4/23, 9:08 AM • WILLIAM • Posted in REC Active BMS 8/20/25, 11:44 AM

5

5
Posts

156
Views
J

WS-REC-Cerbo slave issues?
3/2/23, 6:31 AM • Jonny • Posted in WS500 User Installation and Programming Questions 3/16/23, 11:36 AM

8

8
Posts

240
Views
M

Connecting a CerboGX, WS500 and REC BMS to nmea2000
2/16/23, 12:49 PM • Matthew • Posted in REC BMS to Victron VE Bus 3/13/23, 9:04 AM

3

3
Posts

558
Views
J

Fuse blowing in Alternator Positive
2/16/23, 12:22 AM • Jamieson • Posted in WS500 User Installation and Programming Questions 2/17/23, 5:44 AM

7

7
Posts

343
Views
R

REC BMS additioanl temperature Sensors DS18B20
2/15/23, 8:37 AM • Richard • Posted in REC BMS Tips and Tricks 2/15/23, 8:37 AM

1

1
Posts

204
Views
R

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

7

7
Posts

313
Views
C

DFK linking
2/2/23, 5:40 PM • Chen • Posted in WS500 User Installation and Programming Questions 2/2/23, 6:31 PM

2

2
Posts

100
Views
R

New REC sample wiring Diagrams now available
1/23/23, 11:09 AM • Richard • Posted in REC Product Announcements 1/23/23, 11:09 AM

1

1
Posts

273
Views
P

Shunt reading 2.5x lower than actual current
1/22/23, 2:49 PM • Peter • Posted in REC Q Series BMS 1/22/23, 2:53 PM

2

2
Posts

179
Views
P

WS500 and Cerbo GX - getting data from Cerbo GX via NMEA2000
1/20/23, 1:05 PM • Peter • Posted in WS500 User Installation and Programming Questions 1/21/23, 9:53 AM

2

2
Posts

531
Views
M

Setting up a REC BMS, a Cerbo and a Multiplus 2
1/20/23, 6:35 AM • Michael • Posted in REC BMS to Victron VE Bus 2/19/23, 9:21 AM

16

16
Posts

662
Views
R

bms 10 red led flashes,
1/17/23, 10:23 AM • Ronald • Posted in REC Active BMS 1/23/23, 9:34 AM

3

3
Posts

180
Views
S

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

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2
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152
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All topics

Preliminary sample displays and enclosures 6/25/23, 10:30 AM • Rick • Posted in Project Status 6/25/23, 10:30 AM

Project Introduction 6/25/23, 12:15 AM • Rick • Posted in REC LCD and Blue Tooth Development Forum 6/25/23, 12:15 AM

Alternator Warm - Wire #7 send 3.5 Amps!!?? 6/18/23, 9:34 PM • Jeff • Posted in WS500 User Installation and Programming Questions 6/19/23, 2:32 AM

Operating temperature range for 9M slave modules 6/12/23, 3:00 PM • William • Posted in REC Master Slave Large Scale Systems 6/12/23, 3:00 PM

REC- BMS DB9 signal waveforms / +5v (pin 6) GND (pin 2) / random system shutdown w/ reboot 6/10/23, 10:19 AM • Scott • Posted in REC-BMS Programming and Configuration Questions 6/10/23, 10:19 AM

Splicing New WS500 Harness 6/8/23, 1:12 PM • John • Posted in WS500 User Installation and Programming Questions 6/9/23, 1:21 AM

P VAN Opt-2 Harness 6/5/23, 5:53 PM • John • Posted in WS500 User Installation and Programming Questions 6/6/23, 11:48 PM

alternator, solar charging system A real mystery, no one can figure out why we are not able to charge from the alternators anymore. 6/4/23, 5:27 PM • Jay • Posted in WS500 Tips, Tricks and support 8/12/23, 10:01 AM

How to read error log from REC Master BMS 6/2/23, 12:08 PM • Rick • Posted in REC BMS Tips and Tricks 6/7/23, 9:06 PM

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

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

WS500 T-105 settings with Cerbo and MPPT 5/19/23, 9:51 AM • Rick • Posted in WS500 User Installation and Programming Questions 5/21/23, 6:54 PM

what is the balancing capacity? 5/16/23, 5:03 AM • carl • Posted in REC Active BMS 5/17/23, 3:12 AM

who is the boss? BMS or Multiplus? 5/11/23, 8:04 AM • carl • Posted in REC BMS to Victron VE Bus 5/15/23, 4:09 AM

WS500 and Cerbo BMS-CAN vs VE-CAN when using a non-Victron BMS 5/5/23, 6:27 PM • Rick • Posted in WS500 Tips, Tricks and support 1/14/25, 12:47 PM

REC BMS Voltage Setting for clean 100% SOC charge end. 5/4/23, 4:28 AM • Stefan • Posted in REC Q Series BMS 5/5/23, 6:09 AM

REC Q Series BMS + WS500 + Victron + charge/discharge control 5/3/23, 9:16 PM • Thomas • Posted in REC Q Series BMS 6/11/23, 11:53 AM

Email status 4/27/23, 12:47 AM • Rick • Posted in OGM Energy News 4/27/23, 12:47 AM

Alternator Failed offshore 4/23/23, 7:03 PM • Ross • Posted in WS500 Tips, Tricks and support 4/25/23, 6:00 PM

Pinout for the 770680-4 connector... 4/19/23, 12:40 PM • D. Ryan • Posted in WS500 User Installation and Programming Questions 4/24/23, 11:33 AM

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

Erratic reading from current shunt 4/15/23, 2:26 PM • Darryl • Posted in REC Active BMS 5/20/24, 3:07 AM

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

REC Wifi Module 1.61 firmware release notes? 3/15/23, 9:56 AM • nebulight • Posted in REC Product Announcements 4/22/23, 1:43 PM

WS500 Not Keeping Battery Topped Off 3/15/23, 9:16 AM • Brent • Posted in WS500 User Installation and Programming Questions 3/17/23, 7:36 PM

WS 500 + Dedicated Shunt + Cerbo + REC-Q = 2x DC Power Reported 3/10/23, 9:39 AM • Nathaniel • Posted in WS500 User Installation and Programming Questions 3/16/23, 6:33 PM

Problem rec bms shutting down due to low voltage at 3v fix 3/8/23, 3:31 AM • Clarence • Posted in REC SI Series BMS 10/23/23, 9:36 AM

Connecting REC wifi module to the outside world? 3/4/23, 9:08 AM • WILLIAM • Posted in REC Active BMS 8/20/25, 11:44 AM

WS-REC-Cerbo slave issues? 3/2/23, 6:31 AM • Jonny • Posted in WS500 User Installation and Programming Questions 3/16/23, 11:36 AM

Connecting a CerboGX, WS500 and REC BMS to nmea2000 2/16/23, 12:49 PM • Matthew • Posted in REC BMS to Victron VE Bus 3/13/23, 9:04 AM

Fuse blowing in Alternator Positive 2/16/23, 12:22 AM • Jamieson • Posted in WS500 User Installation and Programming Questions 2/17/23, 5:44 AM

REC BMS additioanl temperature Sensors DS18B20 2/15/23, 8:37 AM • Richard • Posted in REC BMS Tips and Tricks 2/15/23, 8:37 AM

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

DFK linking 2/2/23, 5:40 PM • Chen • Posted in WS500 User Installation and Programming Questions 2/2/23, 6:31 PM

New REC sample wiring Diagrams now available 1/23/23, 11:09 AM • Richard • Posted in REC Product Announcements 1/23/23, 11:09 AM

Shunt reading 2.5x lower than actual current 1/22/23, 2:49 PM • Peter • Posted in REC Q Series BMS 1/22/23, 2:53 PM

WS500 and Cerbo GX - getting data from Cerbo GX via NMEA2000 1/20/23, 1:05 PM • Peter • Posted in WS500 User Installation and Programming Questions 1/21/23, 9:53 AM

Setting up a REC BMS, a Cerbo and a Multiplus 2 1/20/23, 6:35 AM • Michael • Posted in REC BMS to Victron VE Bus 2/19/23, 9:21 AM

bms 10 red led flashes, 1/17/23, 10:23 AM • Ronald • Posted in REC Active BMS 1/23/23, 9:34 AM

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

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Latest topics

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

VRM Remote - "Remote Charging = NO" always when using WS-500 running fw 2.6.1 - but still charges ok

Latest posts

Connecting REC wifi module to the outside world?

REC Master9M with new REC2Q Slave Units - Cable from Master to 1st Slave: which cable colour goes where

WS500 Field Stuck High

Zeus as REC Active follower on 500k bms can but no cerbo widget.

WS500 Field Stuck High

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Preliminary sample displays and enclosures
6/25/23, 10:30 AM • Rick • Posted in Project Status 6/25/23, 10:30 AM

Project Introduction
6/25/23, 12:15 AM • Rick • Posted in REC LCD and Blue Tooth Development Forum 6/25/23, 12:15 AM

Alternator Warm - Wire #7 send 3.5 Amps!!??
6/18/23, 9:34 PM • Jeff • Posted in WS500 User Installation and Programming Questions 6/19/23, 2:32 AM

Operating temperature range for 9M slave modules
6/12/23, 3:00 PM • William • Posted in REC Master Slave Large Scale Systems 6/12/23, 3:00 PM

REC- BMS DB9 signal waveforms / +5v (pin 6) GND (pin 2) / random system shutdown w/ reboot
6/10/23, 10:19 AM • Scott • Posted in REC-BMS Programming and Configuration Questions 6/10/23, 10:19 AM

Splicing New WS500 Harness
6/8/23, 1:12 PM • John • Posted in WS500 User Installation and Programming Questions 6/9/23, 1:21 AM

P VAN Opt-2 Harness
6/5/23, 5:53 PM • John • Posted in WS500 User Installation and Programming Questions 6/6/23, 11:48 PM

alternator, solar charging system A real mystery, no one can figure out why we are not able to charge from the alternators anymore.
6/4/23, 5:27 PM • Jay • Posted in WS500 Tips, Tricks and support 8/12/23, 10:01 AM

How to read error log from REC Master BMS
6/2/23, 12:08 PM • Rick • Posted in REC BMS Tips and Tricks 6/7/23, 9:06 PM

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

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

WS500 T-105 settings with Cerbo and MPPT
5/19/23, 9:51 AM • Rick • Posted in WS500 User Installation and Programming Questions 5/21/23, 6:54 PM

what is the balancing capacity?
5/16/23, 5:03 AM • carl • Posted in REC Active BMS 5/17/23, 3:12 AM

who is the boss? BMS or Multiplus?
5/11/23, 8:04 AM • carl • Posted in REC BMS to Victron VE Bus 5/15/23, 4:09 AM

WS500 and Cerbo BMS-CAN vs VE-CAN when using a non-Victron BMS
5/5/23, 6:27 PM • Rick • Posted in WS500 Tips, Tricks and support 1/14/25, 12:47 PM

REC BMS Voltage Setting for clean 100% SOC charge end.
5/4/23, 4:28 AM • Stefan • Posted in REC Q Series BMS 5/5/23, 6:09 AM

REC Q Series BMS + WS500 + Victron + charge/discharge control
5/3/23, 9:16 PM • Thomas • Posted in REC Q Series BMS 6/11/23, 11:53 AM

Email status
4/27/23, 12:47 AM • Rick • Posted in OGM Energy News 4/27/23, 12:47 AM

Alternator Failed offshore
4/23/23, 7:03 PM • Ross • Posted in WS500 Tips, Tricks and support 4/25/23, 6:00 PM

Pinout for the 770680-4 connector...
4/19/23, 12:40 PM • D. Ryan • Posted in WS500 User Installation and Programming Questions 4/24/23, 11:33 AM

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

Erratic reading from current shunt
4/15/23, 2:26 PM • Darryl • Posted in REC Active BMS 5/20/24, 3:07 AM

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

REC Wifi Module 1.61 firmware release notes?
3/15/23, 9:56 AM • nebulight • Posted in REC Product Announcements 4/22/23, 1:43 PM

WS500 Not Keeping Battery Topped Off
3/15/23, 9:16 AM • Brent • Posted in WS500 User Installation and Programming Questions 3/17/23, 7:36 PM

WS 500 + Dedicated Shunt + Cerbo + REC-Q = 2x DC Power Reported
3/10/23, 9:39 AM • Nathaniel • Posted in WS500 User Installation and Programming Questions 3/16/23, 6:33 PM

Problem rec bms shutting down due to low voltage at 3v fix
3/8/23, 3:31 AM • Clarence • Posted in REC SI Series BMS 10/23/23, 9:36 AM

Connecting REC wifi module to the outside world?
3/4/23, 9:08 AM • WILLIAM • Posted in REC Active BMS 8/20/25, 11:44 AM

WS-REC-Cerbo slave issues?
3/2/23, 6:31 AM • Jonny • Posted in WS500 User Installation and Programming Questions 3/16/23, 11:36 AM

Connecting a CerboGX, WS500 and REC BMS to nmea2000
2/16/23, 12:49 PM • Matthew • Posted in REC BMS to Victron VE Bus 3/13/23, 9:04 AM

Fuse blowing in Alternator Positive
2/16/23, 12:22 AM • Jamieson • Posted in WS500 User Installation and Programming Questions 2/17/23, 5:44 AM

REC BMS additioanl temperature Sensors DS18B20
2/15/23, 8:37 AM • Richard • Posted in REC BMS Tips and Tricks 2/15/23, 8:37 AM

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

DFK linking
2/2/23, 5:40 PM • Chen • Posted in WS500 User Installation and Programming Questions 2/2/23, 6:31 PM

New REC sample wiring Diagrams now available
1/23/23, 11:09 AM • Richard • Posted in REC Product Announcements 1/23/23, 11:09 AM

Shunt reading 2.5x lower than actual current
1/22/23, 2:49 PM • Peter • Posted in REC Q Series BMS 1/22/23, 2:53 PM

WS500 and Cerbo GX - getting data from Cerbo GX via NMEA2000
1/20/23, 1:05 PM • Peter • Posted in WS500 User Installation and Programming Questions 1/21/23, 9:53 AM

Setting up a REC BMS, a Cerbo and a Multiplus 2
1/20/23, 6:35 AM • Michael • Posted in REC BMS to Victron VE Bus 2/19/23, 9:21 AM

bms 10 red led flashes,
1/17/23, 10:23 AM • Ronald • Posted in REC Active BMS 1/23/23, 9:34 AM

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