hi there, i’m going on a long road tripp with a caravan, so i thought it would be great to make some music during the time. so does anyone knows what i need to connect my octatrack (analog4) to a car battery? sorry if this is a knob question or if the topic has benn already disscused in the forum.
greetings
this topic has been discussed several times… however:
batteries which are used are often hard to come by, out of procuction, not internationally available
A4 AR MD MM have different specs, so what may work for user A on machine A is a different game to other elektronauts
only few, VERY few users use barreries / battery packs, and their report on their experiences is usually short
even with a good few of us wanting to know, we dont possess knowledge of amprere, volts, watts etc … so instead of taking a risk and destroy our babies, we leave it be …
prices: battery packs are still a bit on the expensive side: so experiments are rare!
taking a 1000+dollar machine out in the open will always be an extreme risk factor
out there you still need another power source for speakers, unless our listen to headphones (or in your case car stereo system)
blbalbalblabaaa
maybe we can ask elon musk to come up with a handy solution for us?
All you need is a “power inverter” that plugs into the cigarette lighter of the car.
You then plug your standard OT/A4 power pack into the inverter.
The elektron machines only draw about 15-25w each, so you could run a couple of machines easily off a 200w inverter.
Really quite simple, and cheap.
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thx guys
I use a 12V Lead-Gel accu (12V/8,6 Ah) and a DC/DC Converter. These cost about 1 to 10 Euro. You can adjust the output voltage. Works very nice.
My Speakers are battery powered too. Two (24V) or three 12V/15Ah in series -> 36V with an digital Amp wich delivers arround 50 W to 150W. These amps cost about 20-40 Euro. With high efficiency Speakers ( in my case 15/2 full range, 96dB) its very loud.
Sorry if I missed something, but if you have a car battery, just get an inverter. I have a camper van with a second battery for lights etc, and a 12v dc to 240v ac inverter. Just plug my Octa in to this and the car stereo for awsome bush beats.
can’t find one i had saved somewhere, it was really cheap (not even €20 and with 300W 
)
here’s another alternative: http://www.reichelt.de/RING-REINV500/3/index.html?&ACTION=3&LA=446&ARTICLE=127272&artnr=RING+REINV500&SEARCH=inverter and as Ozone mentions, pretty much anything will do.
WOW… that simple? jeeee… learnt a lot in this thread!
A standard 12v car battery will work, but they do not like to be drained completely. For this application, you ideally want a deep cycle battery, which is designed to go from fully charged to fully discharged and back again. But if you have a spare car battery laying around, I say go for it. You aren’t going to hurt the it by using it for a few hours.
…and the good thing is that you can power other things as well so you are not forced to use only one machine or your headphones 
edit: only downside to this is the weight of the car battery but i guess once you are already carrying few things around, it won’t make a huge difference
The best batteries for this would be deep cycle type, such as those designed for use with mobility scooters. Or marine / leisure batteries, which may be more expensive.
I have a campervan with a large deep cycle lithium battery and solar panels. The voltage can go up to 14.4 volts when the sun is fully out, wonder if this would cause issues with the Digitone which is 12 volts.
