[sdiy] Battery power for eurorack

[Chromatest J. Pantsmaker]

I've seen people create DC-DC supplies taking power from 5V battery banks
(for charging your phone, etc.) and running entire live rigs from that.

I think having a single easily swappable battery would be better than
having one for each voltage.  You can then possibly just plug your DC-DC
supply into a large amperage 5V wall-wart.

On Wed, Dec 22, 2021 at 2:38 PM Oren Leavitt via Synth-diy <
synth-diy at synth-diy.org> wrote:

> 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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