Whop whop whop firing up the back-in-time list digger: 12/25/2025 - from yours truly:
"7) Larger whole house gensets need to be exercised periodically so you know that they will actually work when needed. But if you exercise them too frequently you wear out the transfer switch. They also need at least a 24 hour exercise period since quite often faults in cooling systems won't appear unless the genset has been hot for multiple hours. " And as I recall I got thumped for saying that and other bits of advice about gensets. Good luck, Michael. The denial on gensets is strong on this list. Ted -----Original Message----- From: PLUG <[email protected]> On Behalf Of Michael Barnes Sent: Monday, March 30, 2026 4:17 PM To: Portland Linux/Unix Group <[email protected]> Subject: Re: [PLUG] LiFePO4 UPS battery suggestions? I have been using LiTime batteries and chargers. Good prices, good products, good service. Regarding the "worked last year" generators. Most users, generators should be run monthly for at least 30 minutes on a load. I hook a 1500 watt space heater on mine. Critical applications with permanently wired in units should run them weekly. When I was a broadcast engineer and previous radio sites, our backup generators automatically ran every week and we did load transfer tests monthly. If you are not willing to do the due diligence of regular exercising the backup power, don't bother putting it in. It won't work when you need it. On Mon, Mar 30, 2026, 03:00 Tomas Kuchta <[email protected]> wrote: > Have a look at this unit, it also has usb port to monitor the ups. > > > https://www.storagereview.com/review/ecoflow-river-3-plus-review-compa > ct-power-station-with-600w-output-ups-support > > I have similar unit for 3 year now and it works great. The only issue > I have with my unit compared to the one above is that my unit will not > power up after full discharge shutdown. I have to come by and > physically push a button on my unit - which is unfortunate if I am not > around and need to do something remotely. > > Best, Tomas > > On Sun, Mar 29, 2026, 23:16 Keith Lofstrom <[email protected]> wrote: > > > I'm assembling a >300W UPS. I bought a Impinvt HT-12212 1.2kW Pure > > Sine Wave inverter, and tested it with a few external 12.8V 8Ah > > LiFePO4 batteries in parallel, and a 100W light bulb load. > > > > The Impinvt works OK so far, even though it is intended for higher > > capacity batteries. Next, I plan to purchase a 100Ah > > LiFePO4 battery, which should power my 330 watts of office computers > > for about 3 hours. That will be fed from a line switch and > > emergency generator someday, and 3 hours should be enough time to > > debug a generator that "worked last year." > > > > I looked at Amazon's offerings and user reviews; many foolish > > buyers, many fraudulent sellers. I trust PLUG-folk more, especially > > the subset that keep local data centers running. > > > > So, who has stories of UPS battery victory and/or disaster to share? > > I prefer experiences to opinion; I've already created a surplus of > > contradictory opinions all by myself. > > > > Keith L. > > > > P.S.: yes, I have inline power monitors, P3 Kill-a-Watt and others. > > > > -- > > Keith Lofstrom [email protected] > > >
