Sun Odyssey 35 Inverter Specs

[Hamma]

It's a bit of a longshot - I've tried on Jeanneau boards with no specific success - Does anyone happen to know the specs for a factory fitted inverter in a 2005 Sun Odyssey?

Failing that - would anyone fancy speculating about the likely specs of a factory-fitted inverter in a French mass produced yacht from 20 years ago?

I know absolutely nothing about it - never paid it any attention because I was 'told' using it would damage my batteries and I have never needed to use it - but now I do.

If it's likely to be awful, and incapable of running anything useful like a coffee machine or a kettle, I suppose I will buy a modern decent one... after reading all the threads on here first of course.

Thanks!

 

[Dunx]

Stick a picture on here, someone may recognise what you have and respond.

 

[sawduster]

Jeanneau at that time often used Cristec for chargers and splitters so may have done for inverters, but realistically you'll have to find it and look at it to be sure. It'll almost certainly be labelled with enough information for you to google a model number.

 

[wonkywinch]

I've got a factory fitted Marinco in a 2016 Beneteau but discovered it's only 700 Watts. Weighing up options, a 3.2kw petrol generator on the bathing platform plugged into shore power is cheaper than a bigger inverter with associated battery & cable upgrades.

Assuming of course power demand needed only when boat is stationary!

Have discounted solar as this is in the UK.

 

[PaulRainbow]

I've got a factory fitted Marinco in a 2016 Beneteau but discovered it's only 700 Watts. Weighing up options, a 3.2kw petrol generator on the bathing platform plugged into shore power is cheaper than a bigger inverter with associated battery & cable upgrades.

Assuming of course power demand needed only when boat is stationary!

Have discounted solar as this is in the UK.

Solar works in the UK, we do get some Sunlight !

 

[Boater Sam]

I have one of these.................................................But it doesn't tell me what make or model your inverter is.

 

[KompetentKrew]

If it's likely to be awful, and incapable of running anything useful like a coffee machine or a kettle, I suppose I will buy a modern decent one...

Most modern kettles are 3kw - no chance of that.

The capacity of the inverter will depend on the size of the battery bank, and that will surely depend on the size of the boat - a Sun Odyssey 45 will surely have a bigger bank than a Sun Odyssey 30, and hence a bigger inverter.

You need to visit the boat and get specs of boat battery and inverter.

I would think you would need a massive and expensive upgrade in batteries and maybe other wiring to run a kettle - it's not practical for me on my 40' boat, with a larger battery bank than average (but not as large as some people here). I think a coffee maker would be pushing it.

I know there's one guy on here (@geem?) who's able to run an induction cooker off his battery bank, but that must a good-sized lithium bank, and fitting one of those is not cheap nor trivial technically. I remember he has scads of solar.

The vast majority of boaters must use gas or diesel for anything that generates measurable heat - heating water, cooking, making coffee etc. For them their fridge is the largest drain on their batteries, at 40W or 50W when the motor is running (about 15W averaged out over the course of the day?) and they can last at anchor a couple of days without stressing their batteries. A coffee maker will use at least 10x or 15x as much as the fridge motor - I suppose a couple of coffees a day using a small electric coffee maker might be possible, but I wouldn't even consider it. Running an 800W appliance for 6 minutes is 80Wh, so that's equivalent to running the fridge for 5 hours.

Get your head around watts = volts x amps, and the implications of it, otherwise using your inverter is doomed to woe - you will indeed kill your batteries. Plug into your inverter a 220v appliance that draws 3A, then your inverter is going to draw at least 55A from a 12v battery - that's a LOT! How many Ah are your batteries?

If you search for "how many amps does a coffeemaker draw?" then Google throws up some really good articles aimed at RVers explaining this relationship, but unfortunately the top hits are aimed at Americans - their 110v appliances draw twice as many amps as European 220v ones.

Inverters are mostly for running low wattage things like laptops.

 

[Hamma]

Most modern kettles are 3kw - no chance of that.

The capacity of the inverter will depend on the size of the battery bank, and that will surely depend on the size of the boat - a Sun Odyssey 45 will surely have a bigger bank than a Sun Odyssey 30, and hence a bigger inverter.

You need to visit the boat and get specs of boat battery and inverter.

I would think you would need a massive and expensive upgrade in batteries and maybe other wiring to run a kettle - it's not practical for me on my 40' boat, with a larger battery bank than average (but not as large as some people here). I think a coffee maker would be pushing it.

I know there's one guy on here (@geem?) who's able to run an induction cooker off his battery bank, but that must a good-sized lithium bank, and fitting one of those is not cheap nor trivial technically. I remember he has scads of solar.

The vast majority of boaters must use gas or diesel for anything that generates measurable heat - heating water, cooking, making coffee etc. For them their fridge is the largest drain on their batteries, at 40W or 50W when the motor is running (about 15W averaged out over the course of the day?) and they can last at anchor a couple of days without stressing their batteries. A coffee maker will use at least 10x or 15x as much as the fridge motor - I suppose a couple of coffees a day using a small electric coffee maker might be possible, but I wouldn't even consider it. Running an 800W appliance for 6 minutes is 80Wh, so that's equivalent to running the fridge for 5 hours.

Get your head around watts = volts x amps, and the implications of it, otherwise using your inverter is doomed to woe - you will indeed kill your batteries. Plug into your inverter a 220v appliance that draws 3A, then your inverter is going to draw at least 55A from a 12v battery - that's a LOT! How many Ah are your batteries?

If you search for "how many amps does a coffeemaker draw?" then Google throws up some really good articles aimed at RVers explaining this relationship, but unfortunately the top hits are aimed at Americans - their 110v appliances draw twice as many amps as European 220v ones.

Inverters are mostly for running low wattage things like laptops.

This is exactly the sort of well informed speculation I was hoping for. Thanks.

So it's IV=Watt? Finally after all these years some use for Physics O level!

 

[Hamma]

I have one of these.................................................But it doesn't tell me what make or model your inverter is.

View attachment 163582

I forgot to mention - I'm not with the boar. I will go and look though. Thanks for trying with your ball.

 

[Hamma]

I've got a factory fitted Marinco in a 2016 Beneteau but discovered it's only 700 Watts. Weighing up options, a 3.2kw petrol generator on the bathing platform plugged into shore power is cheaper than a bigger inverter with associated battery & cable upgrades.

Assuming of course power demand needed only when boat is stationary!

Have discounted solar as this is in the UK.

This is likely to be the answer I know.

 

[PaulRainbow]

This is likely to be the answer I know.

Trying to draw a parallel between your boat and one built 11 years later is totally pointless. As an inverter was an option, two consecutive boats off of the production line could easily have different inverters.

To get any really meaningful answers you will need to post some pictures of your inverter and post details of you batteries, plus how you charge them.

One thing i can tell you, a 1kw load @240v AC will draw 100a from your batteries, in a 12v system.

I'll also add one guess... for an inverter installed in 2005 it's very unlikely that it will be pure sinewave, which is what you really need.

 

[Pete7]

Solar works in the UK, we do get some Sunlight !

Indeed, despite South Devon being covered in mist early this morning and the panels covered in heavy dew, we still managed a useful amount of solar output from the sun later to cook omelettes on passage and Plaice for tea.

Our 1kw and 0.8L little Russel Hob kettle draws 74A at night without any solar assistance. No need for a 3kW kettle on board.

https://www.argos.co.uk/product/4821261?clickPR=plp:1:28

Pete

 

[Hamma]

Trying to draw a parallel between your boat and one built 11 years later is totally pointless. As an inverter was an option, two consecutive boats off of the production line could easily have different inverters.

To get any really meaningful answers you will need to post some pictures of your inverter and post details of you batteries, plus how you charge them.

One thing i can tell you, a 1kw load @240v AC will draw 100a from your batteries, in a 12v system.

I'll also add one guess... for an inverter installed in 2005 it's very unlikely that it will be pure sinewave, which is what you really need.

I wasn’t drawing any parallels - I was saying I’ll probably just get a genny.

The pure sinewave bit though is more informative speculation that I was hoping for.

My limited understanding suggests that pure sinewave is preferable for electronics. I would like to run an 1800w coffee machine for 3 mins from a 200ah 12v bank.

If I get a 2kw inverter is that doable?

Thanks.

 

[lustyd]

Our 1kw and 0.8L little Russel Hob kettle draws 74A at night without any solar assistance. No need for a 3kW kettle on board

It makes no difference aside from peak power draw, the Watt hours would be effectively the same to heat the same water.

 

[Daverw]

I wasn’t drawing any parallels - I was saying I’ll probably just get a genny.

The pure sinewave bit though is more informative speculation that I was hoping for.

My limited understanding suggests that pure sinewave is preferable for electronics. I would like to run an 1800w coffee machine for 3 mins from a 200ah 12v bank.

If I get a 2kw inverter is that doable?

Thanks.

Have a look at the Victron site and the specs, they show clearly loads for all their inverters, you need to factor in efficiency loses as well, I think 1800w is a bit close for a 2kw inverter, will work but will drive it hard

 

[PaulRainbow]

It makes no difference aside from peak power draw, the Watt hours would be effectively the same to heat the same water.

That's very true, but we find a 1kw kettle is an advantage, as we are all electric. Being on a 16a supply we found that the pontoon RCBO tripped too often when we used the induction hob and the 3kw kettle at the same time. We now use a full size 1kw kettle and no more trips.

 

[PaulRainbow]

I wasn’t drawing any parallels - I was saying I’ll probably just get a genny.

The pure sinewave bit though is more informative speculation that I was hoping for.

My limited understanding suggests that pure sinewave is preferable for electronics. I would like to run an 1800w coffee machine for 3 mins from a 200ah 12v bank.

If I get a 2kw inverter is that doable?

Thanks.

An 1800w coffee machine will draw 180a from your batteries. Your 3kw kettle will draw 300a. Your batteries have 100ah a max usable power. You can work that out for yourself.

A 2000w inverter will just run the coffee machine, but won't run the kettle. For the little difference in price, i would fit a 3000w inverter.

Using a genny for a coffee machine or kettle wouldn't be a great idea, in my opinion. You would be much better off adding more battery power and some solar panels.

 

[Hamma]

An 1800w coffee machine will draw 180a from your batteries. Your 3kw kettle will draw 300a. Your batteries have 100ah a max usable power. You can work that out for yourself.

A 2000w inverter will just run the coffee machine, but won't run the kettle. For the little difference in price, i would fit a 3000w inverter.

Using a genny for a coffee machine or kettle wouldn't be a great idea, in my opinion. You would be much better off adding more battery power and some solar panels.

Thanks. Very helpful.

I can forget the kettle - I’ve got gas.

For the machine it will draw 180 amps for 6 minutes. Are there negatives associated with such a large current draw? If I run the engine with an 80a alternator will I reduce the load on the batteries or am I oversimplifying?

Also, I make it 150a but I assume you’re allowing for losses and inefficiencies?

 

[PaulRainbow]

Thanks. Very helpful.

I can forget the kettle - I’ve got gas.

For the machine it will draw 180 amps for 6 minutes. Are there negatives associated with such a large current draw? If I run the engine with an 80a alternator will I reduce the load on the batteries or am I oversimplifying?

It will help, to a point.

Also, I make it 150a but I assume you’re allowing for losses and inefficiencies?

Yes. Ball park figure is AC watts / 10 = DC amps. It varies a little depending on the inverter, but it's pretty close in most cases.