[App_rpt-users] USB Battery Bank that supports 'Pass Through Charging' and acts as a UPS for Allstar Nodes running on a Pi

Mark Phillips g7ltt at g7ltt.com
Mon Jul 10 13:14:09 EDT 2017


Tested mine on the shack supply. Works OK at up to 15V. YMMV though.

Mark

On Mon, Jul 10, 2017 at 1:11 PM, Bob Pyke <k6ecm1 at gmail.com> wrote:

> I've looked at these 13 v devices and always wonder it they will handle
> the 15 CDC of an auto charging system like all our radios. Some 12 vdc
> evils will only work properly if the have 12 vdc not 13.8 vdc for example.
> The information on these devices is lacking. Any insight into to this
> issue? Just too bad the rest of the electronics world does not have a ham
> background. Sigh!
>
> Thanks,
> Bob
> k6ecm
> 73
> Sent from my iPhone
>
> > On Jul 10, 2017, at 9:13 AM, Scott Zimmerman <n3xcc at repeater-builder.com>
> wrote:
> >
> > Ramesh,
> >
> > If it were me, I would use a 7ah 12v backup battery with a "normal" 12v
> float charger, then use a buck converter to lower the voltage down to 5v.
> Something like this would do nicely:
> > http://www.ebay.com/itm/262908222815
> >
> > Using 12v storage makes things more "standard".
> >
> > Just my 2c.
> >
> > Scott
> >
> > Scott Zimmerman
> > Amateur Radio Call N3XCC
> > 474 Barnett Road
> > Boswell, PA 15531
> >
> >> On 7/10/2017 11:38 AM, Ramesh Dhami wrote:
> >> Hi Folks:
> >> Wonder if anyone has a lead on a USB Battery Bank that supports
> pass-through charging and does NOT interrupt the output voltage when there
> is loss of commercial power?
> >> I'd like to use a battery bank on my remote node down in FL (renowned
> for electrical storms!), so keeping the Pi up during brown-outs and loss of
> commercial power is a big plus.
> >> In case folks are interested - here is a link to a good article
> providing a review of various products:
> >> http://www.theoutpost.org/6-techy/raspberry-pi-usb-power-
> bank-ups-pass-through/
> >> Unfortunately, the leading contender, the product from RS Electronics
> (brings back memories of my "jollies" as an Apprentice heading up to Alum
> Rock in Birmingham ;) is not available in N. America.  There must be other
> equivalents out there.....
> >> Anyone have a lead on such a product?
> >> Thanks!
> >> Ramesh, VA3UV
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