Rick Christian wrote on 6/27/2017 9:51 PM:
>
>    Hello David!
>
> 27 Jun 17 09:02, you wrote to me:
>  DT> If the capacity is sufficient, I can confirm that this device charges
>  DT> and supplies power at the same time:
>
>  DT>    http://uk.rs-online.com/web/p/power-banks/7757517/
>
> That would be great, if you knew who the OEM was and and there was a source
in
> the US... Shipping batteries is costly, and now a days an issue since they
> can't fly mostly.
>
> And that is the key, finding the ones that power and charge... sort of like
> finding those Oriental HDMI splitters that some how forget to eneable the
HDCP
> on the outputs. :)
>
> Even the Adafruit one which would be perfect, has a glitch:
>
> "Also, when you start and stop charging the pack, it will flicker the output,
> this can cause a 'power sensitive' device like the Pi or an iPhone to reset
on
> the power supply"
>
> Its one of the reasons you can salvaget the AC UPS minus the batteroes frm
> Ebay, and the get extorted on getting them locally, on averarge they run
> $35/EACH for 12VDC 8AH commonly used in UPS ...unless of course you can
> purhcase a bunch in bulk. Then sometimes it can work out..

I have a rather old UPS for keeping my Internet modem and router running
when the power goes down.  When I have a Pi running, I just add it to the
UPS.  The real killer is the monitor though, as it uses more than the 2 or 3
watts the other devices use.  Well, actually, the real killer is my WISP.
If I lose power for 1 minute, they seem to lose power for hours or their
equipment is whacked and has to be replaced again taking hours.  So I have
better up time ratings than they do.

--

Rick C

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