Thanks for that Jaahn, maybe admin can swap the off topic posts to this thread to keep the other one on it's original track
OK yobarr, in the Victron 702BMV settings, menu item:
01 battery capacity so should be 540Ah
02 should be set to 14v
03 should be set to 1.5% (1.5% of 540Ah = 7.8 amps roughly)
04 to 1 min
05 to 1.00
06 to 100%
07 to 0.05amps
08 to 5 min (but I never turn this on in the main menu)
09 don't mess with it
10 don't mess with it
11 If you have a GX colour monitor it should be plugged into the 702 BMV and this set to remote
12 off if using the GX
13 will tell you if the relay is open or closed
14 & 15 I usually set to 0 but Victron may add a delay and minimum close time
16 I generally set to 5%, but for a 540Ah battery, that is still a lot held in reserve, but up to you
17 I generally set to 1% more than the 16 setting
18 I set to 11.8v
19 I set to 12.2v
20 to 14.6v
21 to 14.4v
22 to 31 depends what you use the other shunt voltage tap for, mid battery or start battery or something else
32 ON
33 to 20%
34 to 22%
35 to 12.2v
36 to 12.4v
37 to 14.4v
38 to 14.2v
39 to 48 similar thing to the 22 to 31 menu items, depends what you have connected

The rest is personal choice, but I generally set item 57 to off, the time to go display alters with the load so not a lot of meaning in the numbers it displays
64 I always lock the adjustments so they don't get accidentally changed. If you find you can not adjust any setting look at this menu item and see if it is on or off. You need it off to change any settings.

I would contract Victron before altering the voltages in the next bit, they may have some strange to me reason for aiming to such a high battery voltage, especially as they are trying to balance 6 batteries and 24 cells, run away cells would be a nightmare to sort over 6 spate batteries on the one battery bank.
The maximum voltage should be able to be set in the GX colour control, that should be set to 14v, absorption time to 30 mins and float to 13.8v.
Hopefully Victron have sorted out a method of drawing down from each of the 6 x 90ah batteries evenly, this was a serious problem a while back but they should have sorted it by now and upgraded the operating system via the interweb.
As far as cell voltage monitoring etc, Victron still play those cards close to the chest so unknown if they do and if the monitor every battery, 6 set ups would take a lot of monitoring so hopefully they do it within the battery itself.

T1 Terry

Hi 

A bit technical to kick off with  I thought a bit of light discussion might be nice ! Here are some sites to look for the references on the Vivtron BMV702.

https://www.victronenergy.com/battery-monitors/bmv-700?_ga=2.108000331.835878279.1529571423-704845767.1501504286#pd-nav-image

Seem to be available for about $200 (and more) for 12V ! 

https://www.ebay.com.au/itm/VICTRON-DUAL-BATTERY-SYSTEM-MONITOR-VOLT-METER-12V-12-VOLT-BMV-702-NARVA-87660/302155064364?epid=27015236664&hash=item4659d8642c:g:kzkAAOSw2ipdRf-n

The manual to read here.

https://www.victronenergy.com/upload/documents/Manual-BMV-700-700H-702-712-EN-NL-FR-DE-ES-SE-PT-IT.pdf

Jaahn

-- Edited by Jaahn on Tuesday 20th of August 2019 02:55:21 PM

Hi Terry 

Yobarr should be thankfull for that detailed reply, as he has just said . However that is settings for the battery monitor which is good but does not set the controller(regulator) to a lower voltage. I would think that seems to be important, as I said earlier because it seems high. Yobarr has not specified what unit is doing the solar charging control !! Can we get that information please.  

Jaahn

Jaahn wrote:

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Hi Terry 

Yobarr should be thankfull for that detailed reply, as he has just said . However that is settings for the battery monitor which is good but does not set the controller(regulator) to a lower voltage. I would think that seems to be important, as I said earlier because it seems high. Yobarr has not specified what unit is doing the solar charging control !! Can we get that information please.  

Jaahn

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I'm assuming the whole system is Victron based, batteries, solar controller, maybe some form of DC to DC charger and an over all system controller accessed via the GX colour monitor. All the bits as supposed to plug into one another and communicate with the central control. I believe the access to the reprogramming of the central control is via the GX colour monitor. Probably password protected, Victron can be a bit funny like that, but the BMV can be easily reprogrammed by holding the set up button in for 5 secs, then scroll through the menu with the + and - buttons, lock it in with the select and move on to the next item. All the instructions are in the book starting on page 17.

 

T1 Terry

 

 

 

 

T1 Terry wrote:

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Jaahn wrote:

---

Hi Terry 

Yobarr should be thankfull for that detailed reply, as he has just said . However that is settings for the battery monitor which is good but does not set the controller(regulator) to a lower voltage. I would think that seems to be important, as I said earlier because it seems high. Yobarr has not specified what unit is doing the solar charging control !! Can we get that information please.  

Jaahn

---

I'm assuming the whole system is Victron based, batteries, solar controller, maybe some form of DC to DC charger and an over all system controller accessed via the GX colour monitor. All the bits as supposed to plug into one another and communicate with the central control. I believe the access to the reprogramming of the central control is via the GX colour monitor. Probably password protected, Victron can be a bit funny like that, but the BMV can be easily reprogrammed by holding the set up button in for 5 secs, then scroll through the menu with the + and - buttons, lock it in with the select and move on to the next item. All the instructions are in the book starting on page 17.T1 Terry

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 Terry,you are spot-on with your assumptions,as everything is Victron,I understand that there is a DC to DC charger,and the GX colour monitor does control everything.Because I have little understanding of electrics,I will wait until my Solar man returns,although I do have a stack of Victron  manuals in the van! Most of the area under the bed is occupied by Solar equipment,but the inverter,which weighs around 30kg,is on the other side of the van for weight distribution purposes!Thanks for your help... good to get expert advice! Cheers

T1 Terry wrote:

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Those inverters are monsters eh :lol: Good to see someone with a big solar set up and more battery capacity than me, usually it is one or the other. My Hino has 200Ah of Winston cells @ 24v and 1620w of solar (6 x 270w Tindo panels) and a 3500w MPP solar inverter/charger. Our set up is all electric too, including the hot water and split system air conditioning. We never really run out of power, but we do use them seriously, often down to the 20% warning alarm in the morning after coffee and breakfast if the weather has been ordinary for a few days and the alternator decides it doesn't want to pay the game. Driving at night and running the air con all the way back from Perth in the heat was hard on them as well. But they bounce back every time, although it does take until well after lunch before they are approaching fully charged again once the sun comes out. I guess it really depends what loads are running while the solar is trying to get the battery full again, but there is always enough of the day left to heat the water for a shower at night.T1 Terry

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Hi Terry.....your hot water  system interests me.I have a diesel heater for both air and water,but I would like to learn about electric hot water.Because the reverse cycle heats the van easily,perhaps I should remove the diesel heater,thus saving the weight of both the heater unit,and the 20 litre diesel tank,as well as giving me more room in the van.There would then be no need to keep filling the fuel tank for the heater.....a messy job in my case,as the tank is in the boot! Details of your setup would be appreciated. My setup has no connection to the cars battery,and I have decided to leave my brand new Yamaha 2800i generator,saving 32kg as well as eliminating the need to carry petrol. This means that I can live in the bush for as long as my 540 litres of water lasts,and even longer if I get energetic and use my water pump to fill the van tanks! Cel-fi Go for phone and internet,and Sat TV,mean that I still can have contact with the outside world,although I have 16,000 of my favourite songs on board to keep me company! The only things running while I travel are the fridge,and if I am on dusty roads,the bilge fan that pressurises the van to keep dust out.Works through a snorkel and a Donaldson air cleaner......my own design! Details of your water heater would be appreciated.Cheers

-- Edited by yobarr on Tuesday 20th of August 2019 06:15:14 PM

montie wrote:

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TI Terry and I have not always agreed in the past but I have to give him credit...he does know what he is talking about when it comes to electrical systems....way above my head!

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 Absolutely true Monty.....it is always a pleasure to deal with people who know what they are talking about,and to learn from their experience.When it comes to electrical systems,my knowledge is zilch,but I am happy to listen,not argue,and learn.Cheers

yobarr wrote:

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T1 Terry wrote:

---

Those inverters are monsters eh :lol: Good to see someone with a big solar set up and more battery capacity than me, usually it is one or the other. My Hino has 200Ah of Winston cells @ 24v and 1620w of solar (6 x 270w Tindo panels) and a 3500w MPP solar inverter/charger. Our set up is all electric too, including the hot water and split system air conditioning. We never really run out of power, but we do use them seriously, often down to the 20% warning alarm in the morning after coffee and breakfast if the weather has been ordinary for a few days and the alternator decides it doesn't want to pay the game. Driving at night and running the air con all the way back from Perth in the heat was hard on them as well. But they bounce back every time, although it does take until well after lunch before they are approaching fully charged again once the sun comes out. I guess it really depends what loads are running while the solar is trying to get the battery full again, but there is always enough of the day left to heat the water for a shower at night.T1 Terry

---

Hi Terry.....your hot water  system interests me.I have a diesel heater for both air and water,but I would like to learn about electric hot water.Because the reverse cycle heats the van easily,perhaps I should remove the diesel heater,thus saving the weight of both the heater unit,and the 20 litre diesel tank,as well as giving me more room in the van.There would then be no need to keep filling the fuel tank for the heater.....a messy job in my case,as the tank is in the boot! Details of your setup would be appreciated. My setup has no connection to the cars battery,and I have decided to leave my brand new Yamaha 2800i generator,saving 32kg as well as eliminating the need to carry petrol. This means that I can live in the bush for as long as my 540 litres of water lasts,and even longer if I get energetic and use my water pump to fill the van tanks! Cel-fi Go for phone and internet,and Sat TV,mean that I still can have contact with the outside world,although I have 16,000 of my favourite songs on board to keep me company! The only things running while I travel are the fridge,and if I am on dusty roads,the bilge fan that pressurises the van to keep dust out.Works through a snorkel and a Donaldson air cleaner......my own design! Details of your water heater would be appreciated.Cheers

-- Edited by yobarr on Tuesday 20th of August 2019 06:15:14 PM

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Not a good idea to put all your eggs in one basket. 

Without a diesel heater and a big noisy generator we would have had a very miserable few days

Jaahn wrote:

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Hi 

Good discussion. Just for more discussion.

Brousing some ebay offerings for a BMV702 gives this interesting selection of prices. all free postage from Australian sellers.

AU $195.00 for the basic setup.

Pay a bit more perhaps and get more !

AU $275.00 might include your dongle and some bluetooths

or pay a bit more for some reason AU $319.00 ?? or even more up to $382?

Or hang out for three weeks to receive one from this special seller !! Why do they bother to list them?

AU $621.95   from itsalovelydayforshopping  Note: This is a special Order Item and will take approximately 3 weeks to order.  

jaahn

 

 

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Hi Jaahn, the newer 712 model has the Bluetooth built in, good for those who need the writing bigger so they can read it and all on the one page for the smart phone ... good for around the campfire techno bragging as well :lol:

As far as the crazy high prices, sometimes you will see an item for $999,999.99 or other crazy amounts, it just means they have zero stock at the moment but don't want to lose there spot in the E Bay listing que. One supplier told me they actually had someone order a $200 item that was listed for $900 to distract bidders. The even crazier bit was it took 3 weeks to get the item back in stock and they received a PayPal complaint about non delivery, it was only then that they realised someone had ordered one at the ridiculous price . I'm not sure that I wouldn't have supplied it at the $900 with an apology about the delay :lol:

 

T1 Terry