Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: rbowman Newsgroups: alt.comp.os.windows-11,comp.os.linux.misc Subject: Re: Surviving Power Failures (was Re: Real-time OSs) Date: 16 Aug 2025 07:57:42 GMT Lines: 36 Message-ID: References: <106mke5$1di32$1@dont-email.me> <1071hb2$3qqje$2@toylet.eternal-september.org> <1071jbr$3ra8s$1@dont-email.me> <10746fg$h625$2@dont-email.me> <20250808081850.00002e14@gmail.com> <1075pla$ukab$1@dont-email.me> <20250808144937.000021b1@gmail.com> <10761aq$vv6o$3@dont-email.me> <10777f7$17kq4$8@dont-email.me> <6uqkmlxjb8.ln2@Telcontar.valinor> <1079oe9$1ppd6$6@dont-email.me> <107ab26.3rg.1@ID-201911.user.individual.net> <3rkmmlxplv.ln2@Telcontar.valinor> <107cipt$2g8mr$9@dont-email.me> <107ghmk$3j56j$4@dont-email.me> <107kfi2$d4vh$21@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net tyFccSsX4T29kSPzlbKy/AlgCL62CQ0BKmUCBUEsNZtj3ZNSMl Cancel-Lock: sha1:IQON9ZBFJmIQRVnt46W/D1yqfSE= sha256:7yj29boltMGGci06sYx9OTQlTlDqZgxZWcmUpgn5QWA= User-Agent: Pan/0.162 (Pokrosvk) Xref: csiph.com alt.comp.os.windows-11:22274 comp.os.linux.misc:71340 On Fri, 15 Aug 2025 23:14:23 +0200, Carlos E. R. wrote: > On 2025-08-15 22:16, rbowman wrote: >> On Fri, 15 Aug 2025 12:15:43 +0200, Carlos E. R. wrote: >> >>> I forgot to mention that the optimal solution is for the router to >>> have its own battery. This will truly last hours. Having an UPS >>> generating the mains AC voltage from a 12V battery, and then convert >>> back to 12 VDC for the router, is a big waste. >>> >>> Alternatively, power the router via a 12 volt power supply with >>> battery backup. >> >> My Wifi router/4G modem does have its own battery and will last for >> close to 10 hours. Last summer when the power was off for 6 days it >> didn't help. With my UPS I generally wait for 10 minutes before >> powering the boxes off when the lights go out. > > Wow, six days! Very unusual. It was a derecho also very unusual for this area. Most of the trees are ponderosa pines which can reach over 200' high but have very shallow root systems so they blew over, blocking roads and taking out the transmission lines. One section near my house didn't have trees but the power poles themselves blew down in a domino effect. It was a mess to put it mildly. It was summer so the temperature was no problem. I have a gas stove so cooking was not a problem either. I didn't have a lot in the refrigerator and could get ice from a store that still had power so I didn't lose anything. I could have charged the Kindles from the car like I did the phone but I have plenty of real books to read. I got some bottled water since the electric well pup was down, and could get water to flush the toilet from an irrigation ditch or the river. It was sort of relaxing to tell the truth. No internet.