In my experience running at a fraction of the load to obtain longer runtime does work well with at least the Smart-UPS units; UPSes / inverters will be less efficient at the lower load, but at the same time batteries are more efficient at a lower discharge rate.
On Sun, Mar 29, 2020 at 11:14 AM Ken Hohhof <af...@kwisp.com> wrote: > The only new thing I’ve seen is I think there are some UPS models now > using Li-ion batteries, but still like Colin says, almost no UPS is > designed for long runtime without external battery packs. Even buying a > higher power unit and running it at a fraction of rated load doesn’t help > much because they are inefficient at low load. > > > > I forget who was selling the Li-ion units. > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *ch...@wbmfg.com > *Sent:* Sunday, March 29, 2020 10:50 AM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] Good Home UPS > > > > Hard to go wrong with a Generac. They really are not that expensive. > > > > *From:* Colin Stanners > > *Sent:* Sunday, March 29, 2020 9:48 AM > > *To:* AnimalFarm Microwave Users Group > > *Subject:* Re: [AFMUG] Good Home UPS > > > > Most consumer UPSes only come with enough battery to power their full load > for 5-10min so to power a 250W-using desktop and monitor for 30min I think > that you'd need the amount of batteries (2x 12V 12AH) usually seen in > 1000-1500VA UPS models. > > > > There's not much "better" with non-network UPSes as the service provided > and reliability has not changed noticeably in over 20 years. > > On Sun, Mar 29, 2020, 10:35 AM can...@believewireless.net, < > p...@believewireless.net> wrote: > > Looking to power a desktop for ~30 minutes. I have both the old APC > Back-UPS and Tripp Lite SU750XL but was curious if > > there were any new options available that might be better. > > > > On Sun, Mar 29, 2020 at 10:52 AM Nate Burke <n...@blastcomm.com> wrote: > > Yes, Depends on what your load is. At home I'm using a SmartUPS3000 with > 120AH batteries. It runs everything in my home office, plus the > waterheater/furnace (heat only). It's on a transfer switch to plug the > portable generator into it for an extended outage. Luckily I'm on all > underground utilities, knock on wood, have had 1 power outage in the 15 > years we've lived here. > > On 3/29/2020 8:33 AM, Ken Hohhof wrote: > > What are you going to run off it, and what run time do you need? It > matters if you are running electronics or a sump pump, and if you just want > enough time to save your work or if you want to keep working for a couple > hours. Also most people have battery operated laptops and tablets now > which changes the UPS strategy. > > > > Another factor is if it’s in a location where fan noise would be > bothersome. I’ve had good luck with Tripp Lite SU750XL, it is dual > conversion, replaceable battery, and Powerpole connector for external > extended runtime battery. But the fan runs all the time and it would > probably drive you crazy in a bedroom or home office. And if your > electronics aren’t fussy about the quality of the input power, dual > conversion is probably an expensive overkill. > > > > > > *From:* AF mailto:af-boun...@af.afmug.com <af-boun...@af.afmug.com> *On > Behalf Of *Colin Stanners > *Sent:* Sunday, March 29, 2020 7:43 AM > *To:* AnimalFarm Microwave Users Group mailto:af@af.afmug.com > <af@af.afmug.com> > *Subject:* Re: [AFMUG] Good Home UPS > > > > We've seen many people use the APC Back-UPS series for a long time without > issues. Older models had replaceable batteries and will often work fine > with a new battery; they don't have a calibration command so it's good to > put a light load (30-50%) and let them run down to empty once or twice so > that they recalibrate themselves to the new battery. > > > > Some new Back-UPS models don't have the replaceable batteries. > > > > > > On Sun, Mar 29, 2020, 7:10 AM can...@believewireless.net < > p...@believewireless.net> wrote: > > What is a good UPS to use at home? > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > ------------------------------ > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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