[sdiy] Battery power for eurorack

[Oren Leavitt]

I've seen people use batteries to power small modular synths.

Several years ago I've ran a small synth with 10 low current analog 
modules plus an analog keyboard interface directly from two 12 volt 
DeWalt cordless drill battery packs one each for the V+ and V- rails. 
After playing on it for a few hours the V+ battery was at about 80% 
charge and the V- battery was still at full charge. This was an NiMH 
battery pack. I forget what the mAH rating was..

- Oren

On 12/22/21 2:41 PM, Didier Leplae via Synth-diy wrote:
> I’m curious about the idea of using batteries for eurorack power. I am not an electrical engineer, so correct me if I’m wrong in thinking that battery power could potentially be very clean compared with the cheap power supplies many of us use.
> Plus, of course the portability would be another great benefit.
>
> Given recent advances in rechargeable battery technology, I wonder if it could be practical and not terribly expensive.
>
>   I’m assuming you might need two or even three separate batteries to get the +12 , -12 and +5 volt supplies.
>
> Perhaps someone has done this that I’m not aware of.
>
>
>
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