Azimut 46 - new battery charger system plus service/house batteries, engines battery and gen. battery

Well im looking stupid now, why is the cost/AH of Li-Po batteries less than Gel ?

I see 300Ah Lithium batteries cheaper than 200Ah Gel batteries .... and much smaller to boot .... I have 2 55 x 55 cm boxes so I could have fitted 4 x 300Ah instead of 4x200Ah and also be able to discharge them to 10% instead 50%..

So basically instead of having 400Ah usable (50% gel) I could have 1000Ah usable. Did I got this right ?

Only issue battery will be in the engine room at the moment (heat), I have quite some unused space behind the panels in the crew cabin, fitting the batteries there would be not impossible.
 
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prinex said:
Well im looking stupid now, why is the cost/AH of Li-Po batteries less than Gel ?

I see 300Ah Lithium batteries cheaper than 200Ah Gel batteries .... and much smaller to boot .... I have 2 55 x 55 cm boxes so I could have fitted 4 x 300Ah instead of 4x200Ah and also be able to discharge them to 10% instead 50%..

So basically instead of having 400Ah usable (50% gel) I could have 1000Ah usable. Did I got this right ?

Only issue battery will be in the engine room at the moment (heat), I have quite some unused space behind the panels in the crew cabin, fitting the batteries there would be not impossible.
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Even better, assemble the cells yourself. 4x314Ah cells = £240, BMS = £110.
 
im Dont want to steal this thread but since i have been Reading most of it i too have some issues. Im traveling/cruising with my boat. In march i was most of the time in a marina either shore power but since april i have had only eighrt times in a marina with shorepower. I had some ports with freshwater but no shorepower. This means I am deoending on my generator a lot. Solarpanels help something. The setup is 24v for starting and sternthruster and 12v for the rest ( bowthrustet, generator starter and consumers). There is a charger for 24 volt and another for 12v with three exits. It should be able to charge 40A but have seen max 20 si might as well change to a modern victron i have bought by mistake (20A). I know i need a batterymonitor and is on the list for the winter but reading here its obvious that consumets should be LiFo for the future. My idea was to keep the system as it is snd ADD LiFo to be charged Battery to battery. Then simply switch to the LiFo when at anchor. Does that make sence ??
 
piratos said:
im Dont want to steal this thread but since i have been Reading most of it i too have some issues. Im traveling/cruising with my boat. In march i was most of the time in a marina either shore power but since april i have had only eighrt times in a marina with shorepower. I had some ports with freshwater but no shorepower. This means I am deoending on my generator a lot. Solarpanels help something. The setup is 24v for starting and sternthruster and 12v for the rest ( bowthrustet, generator starter and consumers). There is a charger for 24 volt and another for 12v with three exits. It should be able to charge 40A but have seen max 20 si might as well change to a modern victron i have bought by mistake (20A). I know i need a batterymonitor and is on the list for the winter but reading here its obvious that consumets should be LiFo for the future. My idea was to keep the system as it is snd ADD LiFo to be charged Battery to battery. Then simply switch to the LiFo when at anchor. Does that make sence ??
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I don’t think it is a good idea to mix batteries.
 
PaulRainbow said:
I assumed he was using a DC-DC charger to charge the LFP bank and them swapping over at anchor, so it'll only be one or the other.

That said, why do you think it's a bad idea to mix batteries ?
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I’m no expert on this subject, but if the batteries in a bank are different, I would expect them to charge at different rates? This can’t be good?
 
rafiki_ said:
I’m no expert on this subject, but if the batteries in a bank are different, I would expect them to charge at different rates? This can’t be good?
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I've been running an experimental system with LFP and LA in parallel for the past 12 months and it works surprisingly well. It does allow for failure of the LFP battery or BMS, the LA just takes over. Also gives the option of starting the engines from the LA batteries that are in parallel and always fully charged. LFP are charged by solar and/or shore power and the LA are charged by virtue of being in parallel. Alternators are connected to the LA and some charge goes to the LFP, but not that much to harm the alternators, in fact, the only fly in the ointment so far is i'm not getting as much current from the alternators as i'd like. Still have some testing to do though.
 
Sticky Fingers said:
That’s not a mix of batteries in a single bank though is it? (Which is what I think Rafiki meant?)
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Yes, it is "experimental system with LFP and LA in parallel"

I'm not suggesting for a moment that anyone tries this at home, but i'm interested in what happens, rather than reading stuff online etc. There's a few surprises, but when one considers the difference in resistance between the two batteries it starts to make a bit of sense.
 
Victron Battery Charger / Control & Management with Victron GX

I will be installing a Victron MultiPlus II Type 12 / 3000 / 120 - 32 as battery charger / inverter for my new battery system:

What is the good solution for Control & Management with Victron GX?

Do I need only Monitor GX Touch 50? or is there also a prerequisit for installing the Management-System Cerbo-S GX?
My understanding is that the functionality of Cerbo GX is included into the MultiPlus II?

For the final solution I would like to have acces to the system over local IP LAN / WiFi.
 
Skipper Felice said:
Victron Battery Charger / Control & Management with Victron GX

I will be installing a Victron MultiPlus II Type 12 / 3000 / 120 - 32 as battery charger / inverter for my new battery system:

What is the good solution for Control & Management with Victron GX?

Do I need only Monitor GX Touch 50? or is there also a prerequisit for installing the Management-System Cerbo-S GX?
My understanding is that the functionality of Cerbo GX is included into the MultiPlus II?

For the final solution I would like to have acces to the system over local IP LAN / WiFi.
Click to expand...
You need a Cerbo GX and a GX touch display (although you can replace the touch display with DIY solutions, the Touch is the simplest). You should also fit a Smart Shunt to monitor the batteries. These all interconnect. The Cerbo has wifi, so send that to a router and you can view the data locally via LAN or send to the Victron VRM, where you can view the data anywhere, online.
 
The expectation in marina Loano is when you leave the boat ( gone home ) you turn off the pedestal.

They have done risk assessments bcz of a history of fires inc fatalities.
 
Sticky Fingers said:
Wow. What if you want to leave some services on? Maybe not important in the Med but eg dehumidifier. or security equipment, CCTV, boat monitors, battery chargers.
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Mooring in marina for 2-4 months: WHAT do you switch off or keep alive?

My intention is: When I leave the boat for a longer time (2-4 month / winter) I switch the whole electrical system off and I disconect shore power / cable.
Beside this I will have a small electrical system with own battery plus PV / solar panel and charger (appx. 100Ah). This will supply the LTE/ Internet router 24/7 (400 mA standby) and the data connection. Over internet/VPN I can connect to my router/boat and over an IP switchboard I will power (on and off) some devices for monitoring.
Monitoring will be the Victron Cerbo GX (batteries), some environment, temperature etc. plus a camera system (1 helm + 1 cockpit).
 
Skipper Felice said:
Mooring in marina for 2-4 months: WHAT do you switch off or keep alive?

My intention is: When I leave the boat for a longer time (2-4 month / winter) I switch the whole electrical system off and I disconect shore power / cable.
Beside this I will have a small electrical system with own battery plus PV / solar panel and charger (appx. 100Ah). This will supply the LTE/ Internet router 24/7 (400 mA standby) and the data connection. Over internet/VPN I can connect to my router/boat and over an IP switchboard I will power (on and off) some devices for monitoring.
Monitoring will be the Victron Cerbo GX (batteries), some environment, temperature etc. plus a camera system (1 helm + 1 cockpit).
Click to expand...
Why on Earth would you do that ? And leave the batteries off charge all Winter ?

Why not connect the router etc to the domestic bank and have the solar panel connected to it too ? You can do everything above, plus keep the batteries maintained.
 
Skipper Felice said:
Well - If I look around my pier at the Marina of Loano about 60% of all owners disconect from shore power and switch off when leaving. There are around 50 boats on our pier; 30 sailingyachts / 20 motoryachts, all 40 to 60 ft.
Click to expand...
You just spent an insane amount of money on batteries, but you want to leave them off charge over Winter ?
 
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