How about the lowest power UPS you can find and replace the little battery with car battery?
Or a low power inverter and small charger and a car battery with manual move power plugs to the inverter? A standard UPS would allow time to switch the plugs. Or like above with a home built transfer switch that also makes the inverter run. (car battery should be the kind that doesn't require periodic watering.) thanks jk On Fri, Apr 12, 2024 at 12:15 AM Keith Lofstrom <kei...@keithl.com> wrote: > On Tuesday, Ziply fiber installed an optical network > terminal (ONT) ... which I will discuss in another email. > Besides being wicked fast, the wallwart that powers the > ONT draws only 5 watts. > > If we have another ice storm and 8 day power outage like we > had in January, I would like to power that O.N.T. and a > 5 port gigabit switch (2 more watts) for a week or more. > > BTW, the neighborhood "hub" for the Ziply fiber is a > "wavelength division multiplexer" - a glass marvel that > splits a single bidirectional multiband fiber into separate > bands for customers. The WDM uses no electrical power. > > A typical 200 watt UPS uses quite a lot of the battery > power just to power internal circuitry, and has limited > sealed-lead-acid battery capacity. I can imagine a 10 watt > output "mini" UPS that uses a tray of external lithium iron > phosphide batteries and runs for days, using far less power > for internal operation. > > Do products like that exist? Where can I buy one? > > Keith L. > > -- > Keith Lofstrom kei...@keithl.com >
