Anelok: the power struggle

Felix sucotronic at
Thu Apr 9 09:06:01 UTC 2015

Another quick search and somebody suffered your pain in 2011 :P

I'm a fan of AAA power, since they're cheap and rechargeable options, but
what about other options:

- Parallel CR2032
- Rechargeable coin cell http://www.digikey

Changing the microsd storage by flash storage don't improve the situation,
because they also typically eat 10-15ma when writing :S

On Thu, Apr 9, 2015 at 10:12 AM, Werner Almesberger <werner at>

> Felix wrote:
> > I was curious about that and find some data on stackoverflow:
> >
> Ah, nice ! Pity he didn't have a better meter that would let him
> monitor also the short peaks.
> > it seems that you would need a ¡50mf one!
> Yeah, I ended up with this sort of monsters, too :-)
> Now, there would be fairly small and not too expensive supercaps
> in that range. However, they have an even worse ESR (Equivalent
> Series Resistance) than the coin cell: about 15-20 Ohm for the
> cell, about 100 Ohm for a compact supercap, so they couldn't
> deliver nearly enough current.
> However, I also found supercaps with a low ESR. But they're quite
> large and pretty expensive. Here is a 50 mF model with a stunning
> 100 mOhm:
> That's when I decided that this is probably not where I'll find a
> solution ...
> - Werner
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