That's not a bad idea, and on that note there are USB to barrel connector dongles. Some are fixed voltage, but many have a voltage selector switch. I got one to power a cell phone repeater at a campsite using one of those USB power bricks. I know that may or may not help with PoE depending on what you're working with.
On Sat, May 3, 2025 at 1:23 PM Ken Hohhof <[email protected]> wrote: > It would be nice if more CPE devices used USB-C for power, you could = > power them off power banks intended for laptops and phones. > > I wonder if one of these would work: > https://www.ankersolix.com/products/c300-dc?variant=3D49702163972426 > > There's a 200W DC model, a 300W DC model, and a 300W DC+AC model. They = > have LFP batteries and a 12V car charger output. They seem intended as = > portable power banks, not sure how well they would work as a UPS. > > I seem to remember Tycon makes POE inserters that can be powered via = > USB. > > -----Original Message----- > From: AF <[email protected]> On Behalf Of Chris Fabien > Sent: Friday, May 2, 2025 9:01 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] UPS for Internet equipment > > Years ago I had someone send me a demo unit of a ONT/router battery = > backup that just used 8 D-Cell Alkaline batteries. Up to the customer to = > replace them when they go bad or are depleted by an outage. Didn't seem = > like a terrible idea if you "had to offer a backup power solution" > > On Fri, May 2, 2025 at 9:10=3DE2=3D80=3DAFAM Josh Luthman = > <josh@imaginenetworksll=3D c.com> wrote: > > > > I'm testing the ESPI box. Very small 12v lithium unit. 12v output=20 > > with =3D > DC barrels, and POE capability (24v or 48v passive only i think) > > > > On Fri, May 2, 2025 at 8:23=3DE2=3D80=3DAFAM Mike Hammett = > <[email protected]>=20 > > wr=3D > ote: > >> > >> You do have to offer it (I think that requirement is going away), but = > > >> no=3D > on=3D3D > >> e has to take you up on the offer, and the offer doesn't have to be=20 > >> reas=3D > ona=3D3D > >> ble. > >> > >> > >> > >> > >> -- > >> Mike Hammett > >> > >> ----- Original Message ----- > >> From: "Steve Jones" <[email protected]> > >> To: "AnimalFarm Microwave Users Group" <[email protected]> > >> Sent: Friday, May 2, 2025 12:10:38 AM > >> Subject: Re: [AFMUG] UPS for Internet equipment > >> > >> > >> > >> I thought there was some rule that you have to offer UPS if you sell=20 > >> VOI=3D > P, =3D3D > >> youd think the market would be saturated with small power long=20 > >> runners i=3D > n t=3D3D > >> his space=3D3D20 > >> > >> > >> On Thu, May 1, 2025 at 7:35 PM Ken Hohhof < [email protected] >=20 > >> wrote:=3D3D=3D > 20 > >> > >> > >> > >> > >> > >> > >> > >> Most people have phones, tablets and laptops that are battery=20 > >> powered, a=3D > s w=3D3D > >> ell as security cameras like Ring and Blink. But unless they have a=20 > >> whol=3D > e h=3D3D > >> ome generator, their Internet stops working if their Internet=20 > >> equipment =3D > (ro=3D3D > >> uter, modem, ONT, radio, gateway, etc.) doesn=3D3DE2=3D3D80=3D3D99t = > have=20 > >> power=3D > .=3D3D20 > >> > >> > >> > >> Have any of you found a UPS that fits this use case?=3D3D20 > >> > >> > >> > >> Everybody wants to sell you an 800 VA battery backup with 30 minutes=20 > >> of =3D > run=3D3D > >> time. It=3D3DE2=3D3D80=3D3D99s the old paradigm of powering your = > desktop=20 > >> compu=3D > ter long =3D3D > >> enough to save your work and shut it down. What we need is something=20 > >> tha=3D > t d=3D3D > >> elivers 1/10 that much power for 10 times that long.=3D3D20 > >> > >> > >> > >> Yes, I realize a big part of the problem is the inefficiency of DC/AC = > > >> co=3D > nve=3D3D > >> rsion especially at low power levels. And there have occasionally=20 > >> been D=3D > C b=3D3D > >> attery backups for network equipment, usually for a specific model of = > > >> CP=3D > E. =3D3D > >> But we are often faced with a radio that wants 24-30 or 48-56 VDC,=20 > >> and a=3D > Wi=3D3D > >> Fi router that wants 5 or 12 VDC.=3D3D20 > >> > >> > >> > >> If this was for our own use, I could build something with some DIN=20 > >> rail =3D > ele=3D3D > >> ctronics and a battery, but it wouldn=3D3DE2=3D3D80=3D3D99t be UL = > approved=20 > >> or =3D > appropria=3D3D > >> te for a customer to use in their home.=3D3D20 > >> > >> > >> > >> People these days get alerted on their phone because their doorbell=20 > >> came=3D > ra =3D3D > >> is offline, and they call their ISP rather than check for power=20 > >> outages.=3D > If=3D3D > >> they had a UPS for their Internet equipment, they would get an alert = > > >> th=3D > at =3D3D > >> their POWER was off. Ideally it would run for 8 hours which seems to=20 > >> be =3D > a t=3D3D > >> ypical restoral time for power companies. But I guess even with a=20 > >> couple=3D > ho=3D3D > >> urs they would at least know why their security camera is offline.=20 > >> And i=3D > f t=3D3D > >> hey are home they continue doing stuff online for awhile and start=20 > >> plann=3D > ing=3D3D > >> where to go for public WiFi if the power outage lasts longer than=20 > >> their=3D > ba=3D3D > >> ttery runtime. --=3D3D20 > >> AF mailing list=3D3D20 > >> [email protected]=3D3D20 > >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com=3D3D20 > >> > >> --=3D3D20 > >> AF mailing list > >> [email protected] > >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > >> > >> > >> -- > >> AF mailing list > >> [email protected] > >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > -- > > AF mailing list > > [email protected] > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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