From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1LzaFK-00039s-QB for garchives@archives.gentoo.org; Thu, 30 Apr 2009 17:40:31 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 8C63DE0438; Thu, 30 Apr 2009 17:40:28 +0000 (UTC) Received: from yw-out-1718.google.com (yw-out-1718.google.com [74.125.46.155]) by pigeon.gentoo.org (Postfix) with ESMTP id 630FFE0438 for ; Thu, 30 Apr 2009 17:40:28 +0000 (UTC) Received: by yw-out-1718.google.com with SMTP id 5so1419828ywm.46 for ; Thu, 30 Apr 2009 10:40:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=X3yNLHsRnsLq+KBDpiDqjJuMJc0IXfd9ZzxY8JMKXe0=; b=wMKqIauU1oJ6cgEEWkyhhDmMzFYCEWL8Ps1u5i/Q5OdC/Rfb9q/tjdj4A5OddCymax yF21TpjykMO5tPbjwR8ftXwlMw3Px1Taot27UAeh0dBaotcQo7QYoUNqykC4NU/IWjVH FJYEMp4en8767JvGy+HGQXG4gKs4MrkcPoRi8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=M4EtwQOrPEhESb3q9vAlXMJ7ulxJSR9e0y28xhS7fMpJMB/uLVPTkJxzbiOhFlY54e nmulj4ST3skIP2oX53L/obFZEl2BqWe7nst78e/B3MHJgg7xwG9Ko02I+ZySJohHF9Nc syfq9Z8FhV8k4QeN76rcgy6NB8FoTBAFkkXdE= Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.151.131.4 with SMTP id i4mr3977288ybn.136.1241113228114; Thu, 30 Apr 2009 10:40:28 -0700 (PDT) In-Reply-To: <658900.3774.qm@web31601.mail.mud.yahoo.com> References: <658900.3774.qm@web31601.mail.mud.yahoo.com> Date: Thu, 30 Apr 2009 10:40:28 -0700 Message-ID: <5bdc1c8b0904301040m71f610a2vfeebdb004e8828a0@mail.gmail.com> Subject: Re: [gentoo-user] [OT]UPS battery dead? From: Mark Knecht To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Archives-Salt: 739868d4-68db-43bc-9de4-a62a381ae12e X-Archives-Hash: 6648089e4a73e89515a177c7f13f5242 On Thu, Apr 30, 2009 at 10:31 AM, maxim wexler wrote: > > >> Unplug all your electronic devices and plug in a lamp with >> a 100 Watt >> incandescent light build. With the lamp on unplug the UPS >> from the >> wall and see what happens. If the battery is dead it won't >> last all >> that long. > > Gave ~5 mins. So I let it charge for 24 hrs now it gives me 36 mins. Whic= h is wierd; what happened to all that charge? I haven't had to use it for 6= -7 mons. Isn't the unit supposed to stay topped-up? Well, assuming it was a 100 Watt incandescent that really draws 100 Watts, then that's probably 1/2 to 1/3 the draw of a typical desktop PC implying you would get 12-18 minutes before shutdown. (Really rough ideas - just numbers, etc. Don't take it too seriously.) These batteries have a limited lifetime and they need to be charged up if they haven't been used in a while. >From the APC Forums an APC representative posted the following. Note #3: [QUOTE] Most APC batteries should last three to five years. Below are some guidelines to ensure optimum life expectancy: ***Some APC Back UPS models may have a shorter battery life expectancy. Please reference the user's manual of your APC Back UPS to determine the exact battery life expectancy. 1. Make sure that you keep your APC UPS in a cool, dry location with plenty of ventilation. Ideally, the temperature where your UPS is kept should not exceed 75=C2=B0 F (24=C2=B0 C). Also, for ventilation purposes, = leave roughly one to two inches on each side for proper airflow. 2. Only perform runtime calibrations on your UPS one or two times a year, if necessary. Some of our customers want to check their systems to verify that their runtime is sufficient. However, consistently performing these calibrations can significantly decrease the life expectancy of your APC battery. 3. Do not store APC batteries for extended periods of time. New batteries can be stored for 6 to 12 months. After this period, the battery should be used or it will lose a great deal of its charge. It is not advisable to store batteries that have already been in use. 4. Do not exceed 80 percent of a UPS unit=E2=80=99s rated capacity due to t= he reduction in run time. When you increase your load, your runtime lessens. In the event of a power failure, a UPS loaded to full capacity will drain and discharge it=E2=80=99s battery quickly and will les= sen the life expectancy. [/QUOTE] > > Another thing: When I do the remove-the-usb-cable test I don't see the "c= ommunication lost" error in apcupsd.events until I switch the dial-up off a= nd on quickly! > > In the conf file I have DEVICE: /dev/ttyS[0-3] because the default, /dev/= ttyS0, locks out the modem. But why does the UPS need to know about serial = ports? It connects by this funny RJ-45/USB cable. I wonder does the manufac= turer assume the serial port won't be used? Strange stuff but above my pay grade... - Mark