12V to 15V or 30V inverter

I have no doubt such devices exists, but they WILL be expensive.
Many people with the more usual 12V setup (including me) use a 12VDC to 240VAC inverter connected to a smart charger. Operates perfectly.
All you need is a 12VDC to 240VAC inverter, but connected to a 24V battery smart charger instead.
Ratings are all dependant on your requirements.

Neville

Superc--p sell a 12v to 24v inverter / converter , one of their many Chinese imports , how good ? cant say as have not used one , just know they sell em.

You did not specifu how much current you need, but Dick Smith is selling such a unit giving 2 amperes for $ 30. Cat: K3234

What type of battery are you trying to charge, if you try and charge a 24v batterys from anything lower then 27v (you mentioned 15 or 30v) it will either not charge the battery or charge it not to full charge.

You can buy a 12v to 24v converters rated at 20amps (as in 12v in 24v out) for about $300 but it is not designed to charge batterys and being switch mode technology you will destroy it.

We use these converters in our service vehicles so we can test 24v equipment out in the field from the service vehicles 12 battery.

If you use a 12v to 240v inverter and then plug a 24v battery charger into the 240v inverter that will work, but then you will have to charge the 12v battery all the time.
You will find that if you use a 24v charger on the 240v inverter running from a 12v battery, you may put 15amps into the 24v battery but take 40amps from the 12 volt battery.

Can you give some more details on what you are trying to achive.

regards Richard

Hi Techie

Used a 12/24v converter here from gsl.

They actually put out a regulated 25v , a little low for charging - but I played with reference resistors and used 28v.

Short circuit proof also

www.gsl.com.au/products/vdoublers.shtml

Robin Miller

can you fit a second alternator (24v) because that's the safe, reliable and assured method.

check with a Transformer (see yellow pages) manufacturer in your state

Redarc in SA cut their teeth on this stuff. They may be worth a call:
08 8186 5633

No affiliation etc etc.

Cheers

Pete

Thank you to one and all for the answers you have provided.
I am still following up on researching which way to go.
I am looking at making my own inverter using parts from a microwave oven which uses an inverter to generate high voltages.
Will let you all know how it turns out.
Donk