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Article #245Re: APC SmartUPS problem
From: Dr John Stockton
Date: Sat, 12 Jun 2004 18:44
Date: Sat, 12 Jun 2004 18:44
26 lines
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2576 bytes
JRS: In article <4bfkc0tp79ta5cir8nvtjas5hejp6961md@4ax.com>, seen in news:demon.tech.pc, Paul Hopwood <paul@hopwood.org.uk> posted at Sat, 12 Jun 2004 00:19:45 : >"Graham W" <graham@his.com.puter.INVALID> wrote: >>It would be worth checking the terminal voltage under charging >>conditions to make sure that the death of its predecessor wasn't >>down to over-charging. 13.8V is often quoted as suitable for >>sealed lead-acid batteries. > >According to the PowerChute software the UPS itself reports the >voltage at 13.85V. Any reason I should mistrust it? Yes. You should mistrust any stated measurement that has no stated uncertainty; and, while I don't doubt the truth of what Graham actually posted, one needs to be given a range of suitability. It is not safe to presume, just because 13.8 was written, that X is satisfactory if and only if 13.75 <= X < 13.85 - although that may be the case. -- � John Stockton, Surrey, UK. ?@merlyn.demon.co.uk / ??.Stockton@physics.org � Web <URL:http://www.merlyn.demon.co.uk/> - FAQish topics, acronyms, & links. Correct <= 4-line sig. separator as above, a line precisely "-- " (SoRFC1036) Do not Mail News to me. Before a reply, quote with ">" or "> " (SoRFC1036)
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 1063f0,32a19d7fea2ee17a X-Google-Thread: 1036bc,c36563a0f1637fe5 X-Google-Attributes: gid1063f0,gid1036bc,public Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!news.glorb.com!newsrout1.ntli.net!news-in.ntli.net!peernews!peer.cwci.net!kibo.news.demon.net!news.demon.co.uk!demon!merlyn.demon.co.uk!spam From: Dr John Stockton <spam@merlyn.demon.co.uk> Newsgroups: uk.comp.homebuilt,demon.tech.pc Subject: Re: APC SmartUPS problem Date: Sat, 12 Jun 2004 19:44:59 +0100 Organization: Home, 'Surrey', UK Lines: 26 Message-ID: <R9Soz2Br80yAFwr8@merlyn.demon.co.uk> References: <jfq9c01kogmrku8hedjt5hrb4k4e8ea1pj@4ax.com> <MPG.1b2f1208d82dee6a989728@news-text.blueyonder.co.uk> <k2vbc016h75ciae8ukukh91oq9kj03e0fv@4ax.com> <abfhc0pjs64qftmbhjnpg1s03ohbrh433u@4ax.com> <40c8f450$0$533$ed2619ec@ptn-nntp-reader02.plus.net> <4bfkc0tp79ta5cir8nvtjas5hejp6961md@4ax.com> NNTP-Posting-Host: merlyn.demon.co.uk Mime-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: news.demon.co.uk 1087079023 25497 158.152.233.145 (12 Jun 2004 22:23:43 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Sat, 12 Jun 2004 22:23:43 +0000 (UTC) X-Newsreader: Turnpike (32) Version 4.00 <FaPHOaas0ellLCXbR0oIxSiVaE>