*I have no idea where this is or how to get there.* *Debra/Tess* On Fri, Apr 10, 2026 at 5:00 AM <[email protected]> wrote:
> Send PLUG mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://pdxlinux.org/mailman/listinfo/plug > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of PLUG digest..." > > > Today's Topics: > > 1. Re: LiFePO4 UPS battery ... DC House 12.8V 100Ah (Chuck Hast) > 2. ANNOUNCEMENT: Monthly PLUG Clinic on Sunday, April 19, 2026 > (Russell Senior) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 9 Apr 2026 22:17:47 -0500 > From: Chuck Hast <[email protected]> > To: "Portland Linux/Unix Group" <[email protected]> > Subject: Re: [PLUG] LiFePO4 UPS battery ... DC House 12.8V 100Ah > Message-ID: > < > cadnfbv-mpqw04cjg3_hsd-yjj8blc-7wvgqg5fsvmyngstk...@mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > I have some 10KVA medical UPS I inherited from a hospital I service, the > process line that used them > had 4 of them they were replaced by a single 40kva ups. I was told to "get > rid of them" I had just replaced > the batteries back Jan 25, and they only used them 3 more months. > > I also have two 7 nva UPS. All of them use 208 or 240 in, and 120/208 or > 120/240 out. I have some that > The 7kva units have older batteries but they do work. Have not load tested > them to see how much they > still have left. > > The 10 Kva will run 7 minutes at full load. These are Amtek Powervar UPS > they use a boat load of 12v > batteries for a 192vdc bus. They are true uninterruptible UPS, the ac input > is rectified, the battery sets on > the DC bus so when power fails the inverter never sees it. Inverter puts > out very clean synwave AC. > > These UPS powered the blood processing machines in the blood lab of the > hospital. > > I have one powering the critical parts of my home. It has pulled me through > several outages, you would > think living in a place that has tornados, straight winds, ice storms and > bad drivers that the utilities would > put it underground but no... > > So far I have had a small lab take one for their tissue processors, and an > EOC to keep things going while > the genset comes on line. > > On Fri, Apr 3, 2026 at 10:59?PM Keith Lofstrom <[email protected]> wrote: > > > On Sun, Mar 29, 2026 at 08:15:11PM -0700, Keith Lofstrom 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 > > .... > > > Next, I plan to purchase a 100Ah LiFePO4 battery, which should > > > power my 330 watts of office computers for about 3 hours. > > ... > > > I looked at Amazon's offerings and user reviews; many foolish > > > buyers, many fraudulent sellers. > > ... > > > So, who has stories of UPS battery victory and/or disaster > > > to share? > > --------------------- > > > > recap: > > A few people suggested alternate UPS devices, but seemingly > > did not read my requests for suggestions for *** BIG LiFePO? > > BATTERIES *** to go with the NEW Impinvt 1.2kW inverter that > > I ***ALREADY OWN***. > > > > I looked on Amazon, and saw a lot of Brand X crap batteries > > with fraudulent reviews, hence my question to the list about > > ***BATTERIES***, NOT smallish all-in-one UPS devices ... > > which die too soon, or use odd low capacity $$$ batteries. > > Been there, done that, free UPS to someone I don't like much. > > > > I gave up on Amazon as a source; too many fraudulent reviews. > > What's happening to Amazon is sad; I met Jeff Bezos when he > > was a student at Princeton, and founder of SEDS "Students > > for the Exploration and Development of Space". > > More to say, but not now. > > > > --------------------- > > > > April 3 success-so-far report: > > > > Instead, I found my desired 100Ah Lithium battery on eBay: > > > > https://www.ebay.com/itm/145441548113 > > > > DC House US 12V 100Ah Lithium Battery 4000+ Deep Cycle LiFePO4 > > > > 1600 sold, and the seller has 98.8% positive reviews. > > > > I am slightly irked that I paid $150, and the day after my > > purchase DC House dropped the price to $120, but I plan to > > buy more batteries soon, aiming for 24 hours of backup > > power, and charging from photovoltaics. > > > > The Impvirt weighs 11 kg, the battery 9 kg; BIG HURKY > > hardware. While the Impvirt is rated for a 1.2kW load, it > > can supply 3.6kW peak power, useful for starting a large > > induction motor from stall, such as my furnace fan motor. > > > > The Impvirt has an RS-485 serial interface; I will connect > > to that with a "Jhoinrch" USB-to-RS-485 dongle Real Soon > > Now, and (hopefully) monitor inverter power history and > > battery charge level. If knowledge is power, what is > > knowledge about power usage? Power power? > > > > ---- > > > > The computers are a "phase one" test case. My end goal > > is a system that can keep the entire house semifunctional > > through a one week PGE outage. Probably involving a > > second Impvirt, a dozen solar panels, plus a self-start > > propane and natural gas 3 KW generator for winter. > > > > When that is done, I might also design a kiosk in my front > > yard with 10 locking "USB pigeon holes", which neighbors > > can use to charge their phones. Otherwise, they might > > idle their cars for hours just to charge phones. As a > > reluctant climate nazi, I will offer better alternatives. > > > > keithl > > > > -- > > Keith Lofstrom [email protected] > > > > > ------------------------------ > > Message: 2 > Date: Thu, 9 Apr 2026 21:10:27 -0700 > From: Russell Senior <[email protected]> > To: [email protected], PLUG <[email protected]> > Subject: [PLUG] ANNOUNCEMENT: Monthly PLUG Clinic on Sunday, April 19, > 2026 > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8; format=flowed > > Where: Jean Vollum Natural Capital Center, > ?????? 721 NW Ninth Ave Portland, Oregon 97209 > ?????? (on NW 10th Ave between Irving and Johnson) > ?????? Willamette University space on the 2nd floor. > When: Sunday, April 19, 2026, 1pm-5pm > > The PLUG Linux Clinic returns again this month on April 19, from > 1pm-5pm, at Willamette University's space on the 2nd floor of the > Ecotrust Building. Thank you Willamette University, for hosting us! > > Enter the building on the 10th Avenue side. If the outside door is > locked, you should be able to enter through the Hot Lips Pizza. There is > a stairway to the second floor. If the gate is locked, look for a PLUG > Clinic notice, it will have a phone number you can SMS to have someone > let you in. Also, the elevator should work. > > Volunteer helpers are as desirable as helpees. Helping is fun and > rewarding. If you've ever helped out at a PLUG Clinic before, come > checkout the space! > > We are informed that the off-street parking area (about 20-30 spaces) > along the 10th Avenue side is open to the public on weekends. > > Special thanks go to Willamette University's Calvin Deutschbein and > Hillary Patterson for helping to make this happen! > > > -- > Russell Senior > PLUG Volunteer > [email protected] > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > PLUG: https://pdxlinux.org > PLUG mailing list > [email protected] > https://pdxlinux.org/mailman/listinfo/plug > > > ------------------------------ > > End of PLUG Digest, Vol 259, Issue 7 > ************************************ >
