VICTRON BATTERY MONITOR APP BLUETOOTH

VICTRON BATTERY MONITOR APP BLUETOOTH

I am asking Victron engineering to respond to this question of where does it make sense to connect the negative cable from the thruster in this application.With Bluetooth built-in, the BMV Smart is ready for the Internet of Things (IoT) era. Victron is a fantastic engineering company and I am sure the Victron Engineering team can provide very accurate assessment of my question and a very complete answer. I would rather except some inaccuracy that may come with intermittent overload of the shunt. I have some reasons for not wanting to do that. I understand that another system design approach would be to use a shunt with higher current rating. If this is the case then I will not bother to connect the thruster negative cable to the load side of the shunt and I will leave it as is which is connected directly to battery negative. I suspect it will not measure amp-hours at all. I suspect that when current in the shunt exceeds 500A the monitor will not accurately measure amp-hours. What do I mean by “if it will not help anything”. It will be a lot of trouble for me to disconnect the thruster negative cable from the battery and reconnect it to the load side of the shunt so I don’t want to do that if it will not help anything. Because the load is intermittent I am not worried about damaging the shunt. The bow thruster is an intermittent load and draws well over 500 amps. The battery bank that is being monitored has a bow thruster connected to the battery. I am using the standard 500A/50mv shunt supplied with the BMV-712. I am seeking some support regarding an installation of a Victron BMV-712 battery monitor. I am an electrical engineer and an ABYC certified marine electrician. I am seeking an answer from Victron Engineering. Is this possible? Is there a way to calibrate them? Shouldn't the bmv be counting the actual incomimg charge anyway? Or am I possibly missing something in the battery setup? Chris Wilberg asked Apr 19 at 03:37 PMĪs you may know, Victron does not provide direct support to anyone except authorized dealers and distributors and the Victron distributor known as ARW Maritime has directed me to this forum. If I use power after dark the discrepancy will show up the next day.Īll of this leads me to believe that one or both charge controllers are actually delivering more power than they report. On days where I use 5-6 kwh the difference can be as much as 1.5kwh. On idle days it's usually a difference of. The more power I use, the higher the difference becomes. I have tried disconnecting all charging and loads and resetting the current calibration on the bmv. The system mostly sits idle and there is plenty of excess solar capacity that is not being used. The day after will be 99.6% and so on until I get irritated and reset the SOC in the bmv back to 100% But the BMV will show it only returning to 99.8%. The BMS on the battery shows that it is returning to 100% every morning. If this were the case the battery would be slowly depleting, which is what the BMV shows, but that is not the case. In VRM the consumption kwh always shows about 10-20% more than the solar production. There are no loads or chargers that do not go through the bmv. The BMS on that battery maintains normal charge level indications. The battery is a custom 11kwh lithium iron phosphate battery. I have several systems but only one with this issue.The affected system consists of a multiplus, bmv-712, two 100/30 charge controllers, and a cerbo gx. Maybe you have some hints? Thanks anyway! Maybe I should better connect the starter battery ground to the ground bar, and not to the other batteries? So that it is connected to the ground bar behind the shunt.

I have connected the grounds of all batteries to each other. I have connected the DCDC charger as in my handwriting (GRD to ground bar, IN to alternator and starter battery, OUT to positive bar. My question: did I maybe do some wiring wrong so that my consumer batteries are being charged but my BMV-712 does not recognise it? So the Ampere should be positive not negative, see picture. Also it shows a negative load, although motor is running and no big consumers are online. When motoring for a long time, I experience that the BMV-712 is saying that the charge level of my consumer batteries stay same and is not charging. Normally, when motoring, the charger should charge first my starter battery and then when this one is full, it should charge my consumer batteries. I have a problem with my Orion TRSmart Non Isolated DCDC Charger.

Victron battery monitor app