[RE-wrenches] capacitive "super batteries" and H2

[Darryl Thayer]

Hello, this is from an old guy. In the 1960s, our project found that
hydrogen tended to migrate through electrolyzing and could put hydrogen
into an oxygen tank.  Energy is involved in pressuring the hydrogen. All
piping has to be more than 5% chrome to prevent hydrogen embrittlement. The
Gibbs function limits electrolysis to about 75% efficiency, and the fuel
cell is limited to about 75% efficiency. The product is 56% efficient.

The Supercapacitor tends to be challenging to work with as E=CxV^2.  The
voltage of supercapacitors tends to be low, 2.5 volts, and difficult to
series, leading to a high loss.  I used a supercapacitor to operate a
blinking LED beacon.  I think the charged voltage was 4.5 volts.

On Thu, Feb 20, 2025 at 12:41 PM Kirk Herander via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> All,
> www.encap.energy - batteries
>
> www.enapter.com - H2 components
>
>
> Any thoughts on capacitive storage, and specifically Encap capacitive
> batteries with H2?
>
> I have a customer with his heart set on using these batteries etc.for a
> major RE system expansion. Already using an Enapter sourced electrolyser
> and fuel cell, Encap bank provides DC input to a standard Sol-Ark inverter.
> Which I did not see or approve beforehand or install. Being used as a
> prototype back up system at present. Minimal testing so far. Definitely not
> ready for prime time.
>
> First thing I see in the Encap website specs is no mention of UL
> approval of the batteries. Fuel cell OEM is called Enapter.
>
> --
>
> *Kirk Herander / **kirkh at vermont.solar <kirkh at vermont.solar>*
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 34st Anniversary 1991-2025!!*
>
> dba Vermont Solar Engineering
>
> 802.559.1225
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