cooking top with 3400W: Victron Quattro 12V/3000W with a power assist 1000W inverter

[philmay57]

FYI I sailed around the world cooking with a 5KW 24v quattro to an electric hob. We did tend to run the generator when doing the evening meal to give the inverter a break, but we ran for a couple of months off just auxiliary alternator and batteries when the generator had problems. I did take a 3kw inverter (which came with the yacht) as a backup, but never needed to use it.

[philmay57]

I have run for 8 years with 6 x Valence U-Charge U27-12XP Lithium batteries wired in series/parallel for a 24 volt bank (they did not produce the 24V versions back then). I like those batteries because all you have to do is add a BMS controlled safety breaker and then they can simply replace your existing lead acid batteries. They are also Lithium Iron Phosphate technology, so much reduced fire hazard.

[rapanui 2]

Originally Posted by CaptainRivet

2 3000W are 4500Euro versus 3200Euro for a 12V or 24V/5000W one...plus the additional space used. No thank you.
And this didn't answer my question. 3000W one plus my existing 1000W one drive a 3400W load plus the start up spike/surge? Its a 2 burner induction cooktop 3400W (2000+1400W burners) so i can start low and then go up so the spike shouldn't be big.

where do you buy your VIctron??? in the land of the free and the brave?, here in our taxladdenn country of the baguette, a victron 3000 wattsphoenix smart is 1250 euros with vat if interested I send it to you!!! my victron, start a karcher k4, a 3000 watts induction cooker !!!

[philmay57]

The Phoenix Smart looks neat, but it is a plain inverter, so you need a separate battery charger. I guess that is where the price difference comes in.

The combined charger inverters give you more flexibility in terms of being able to pass mains power through so that, if you have spare generator capacity, you can cook with direct mains and charge your batteries at the same time, reducing generator run time. You can also set the charger/inverter to your generator power limit so that it will charge or drain the batteries as required depending on the demand.

[rapanui 2]

Originally Posted by philmay57

The Phoenix Smart looks neat, but it is a plain inverter, so you need a separate battery charger. I guess that is where the price difference comes in.

The combined charger inverters give you more flexibility in terms of being able to pass mains power through so that, if you have spare generator capacity, you can cook with direct mains and charge your batteries at the same time, reducing generator run time. You can also set the charger/inverter to your generator power limit so that it will charge or drain the batteries as required depending on the demand.

the conbined charger price is
https://www.solaris-store.com/1056-q...120-50-50.html

[CaptainRivet]

Originally Posted by rapanui 2

the conbined charger price is
https://www.solaris-store.com/1056-q...120-50-50.html

thank you for your feedback.
I said above 2x 12V 3000W for 4500Euro, means 1 is around the 2250Euro price you posted. UVP list price is 2580Euro in Germany incl. VAT.
The Kärcher K4 has 1800W and with start surge it is around 2600W, so yes a Victron 3KW can handle that. Do you use if for the DIY watermaker?

I considered a 5kw is because of my induction cooktop, a CT3420 Rommelsbach., which has 2 burner with 3400W. One with 2000W, the other 1400W. And a Microwave, steamer, convection oven which has max 1300W.


Have both at home now and trying it out for the boat with a power meter attached. So both burners on 9 of 10 uses max. 2600W, only both on 10 exceed the 3000W. I figured I don't need level 10, even on 8 1l water kettle boils super quick and on level 10 it boils 10 sek faster then on level 8. Both burners on 8 need 2100W plus the microwave/oven on 150degrees (to cook a piece of meat) need 800W which is below 3kw. yes I know 2600W permanent is limit on the 3kw victron. and I won't use both burners on 8 plus oven at the same time.

So a 3kw inverter will be sufficent. Also all others data of the 3kw will fit too.
Ok I cannot run the washing machine in parallel too.


Was on the boat last days and went through the electric again in detail. in fact not too much to change for a 12V Lithum bank too as the bowtruster with its 425A load was on the housebank, so moving that to the starter frees enough amps on the cables/busbars/fuses/switches to run a 3kW inverter.

That would leave me with the option to stay 12V and take 4 Winston cells 400AH or 700AH, so I don't need to rewire some of the 12V installation on the boat. Would love the valence too, great lifepo batteries but nobody ships them (used ones) to europe (in my case to gran canaries).

But as all wrote better not to max the inverter out.....

Decisions...decisions...

[Bushman Biker]

Hi go see a search on Wish.com for inverters,
Solar regulators MPPT, I just bought 100 Amp one for NZ$28= less than US$20. Plus delivery is nominal.
Worried about quality? Buy two.
Also solar panels at very good deals unmatched and hard to believe.
I have bought there for last 3 years mostly very good stuff.

[CaptainRivet]

Originally Posted by Bushman Biker

Hi go see a search on Wish.com for inverters,
Solar regulators MPPT, I just bought 100 Amp one for NZ$28= less than US$20. Plus delivery is nominal.
Worried about quality? Buy two.
Also solar panels at very good deals unmatched and hard to believe.
I have bought there for last 3 years mostly very good stuff.

thanks, no.
I buy Victron for all the electronics, just works and interacts with each other. And get a spare too of all important parts too.
Doing a world cruise and it will be nowhere cheaper then here, looking for relaiblity first and then price. And buying cheap will mean buying twice and then quality for a large premium on top if I even get it somewhere remote.


Just trying to get Lithium for a decent price shipped to Gran Canaria, where my boat lies at the moment. this determines if I go 12V or 24V.
A tesla battery is 24V so no choice here, but 8x300AH Winston or 16x200A AL-Li/Calb or Sinopoly silmilar I will most likely go 12V as the power consumption will significantly rise only with 230V through a 3KW or 5kw Inverter which will be with short cables directly at the batteries/busbars. So I spare myself the 24V to 12V adaption for all the 12V gear on board.
As a Vetus 95 bowtruster with 420A and a Lofran windlass with 100A load was runing over housebank/busbars (over one pair of 95mm2 cable as both are located in the bow and battery bank in Pilothouse) before no adaption needed here, as this will go new directly of the 2x140AGM Starter batteries.
Well that brings me actually to the idea to relocate the starters in the bow near bowtruster and run the starter + charge via the 95qmm cable (for the 150A till 200A max of the starter its definitely oversized :-)), more space in the battery locker...

[barryglewis]

How do you plan to drive the shaft alternator? How will you manage the speed variation from sailing to motoring?

Years ago sailed on a yacht with a generator belt driven from shaft, was very impressed!