X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 15 May 2006 19:00:37 -0400 Message-ID: X-Original-Return-Path: Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1114735 for lml@lancaironline.net; Mon, 15 May 2006 18:23:54 -0400 Received-SPF: none receiver=logan.com; client-ip=205.152.59.67; envelope-from=aadamson@highrf.com Received: from ibm60aec.bellsouth.net ([68.154.105.130]) by imf19aec.mail.bellsouth.net with ESMTP id <20060515222310.VZFH9055.imf19aec.mail.bellsouth.net@ibm60aec.bellsouth.net> for ; Mon, 15 May 2006 18:23:10 -0400 Received: from Typhoon ([68.154.105.130]) by ibm60aec.bellsouth.net with ESMTP id <20060515222306.DUQK29925.ibm60aec.bellsouth.net@Typhoon> for ; Mon, 15 May 2006 18:23:06 -0400 From: "Alan K. Adamson" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] BatteryMinder update X-Original-Date: Mon, 15 May 2006 18:23:02 -0400 X-Original-Message-ID: <024301c6786e$214edcf0$0202fea9@highrf.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0244_01C6784C.9A3D3CF0" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Thread-Index: AcZ4Y3/tZrEi9rWuT4CgXXlb1H8W5AACpNng In-Reply-To: proven to me that letting This is a multi-part message in MIME format. ------=_NextPart_000_0244_01C6784C.9A3D3CF0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Chris, this would probably be the high tech way of testing :)... http://www.westmountainradio.com/CBA_ham.htm Alan _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Christopher Zavatson Sent: Monday, May 15, 2006 5:07 PM To: Lancair Mailing List Subject: [LML] BatteryMinder update A few months ago I reported on a test of the BatteryMinder where I took a Concorde RG25XC that had been sitting around unused for two years after removal from my 360. The initial recovery which started from 50% capacity rose quickly to about 80% in a few weeks. The most recent check showed 86% capacity which I find truly remarkable. It hasthe battery sit inactive for the week or two between flights was very damaging and causing premature degradation of capacity. Concorde's criteria for discarding the battery is the capacity falling below 80%. Some have asked how I test capacity. Not having an official, and expensive, battery tester, I use the poor man's method - a corn cob resister sized to give me the required 1C discharge rate. Current is monitored using a shunt resistor and a high quality voltmeter. I manually record current and integrate after reaching the cut-off voltage of 10V. Chris Chris Zavatson N91CZ 360std www.N91CZ.com ------=_NextPart_000_0244_01C6784C.9A3D3CF0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Chris, this = would=20 probably be the high tech way of testing :)...
 
http://www.westmoun= tainradio.com/CBA_ham.htm
 
Alan

From: Lancair Mailing List [mailto:lml@lancaironline.net] On = Behalf Of=20 Christopher Zavatson
Sent: Monday, May 15, 2006 5:07=20 PM
To: Lancair Mailing List
Subject: [LML] = BatteryMinder=20 update

A few months ago I reported on a test of the BatteryMinder where I = took a=20 Concorde RG25XC that had been sitting around unused for two = years=20 after removal from my 360.  The initial recovery which=20 started from 50% capacity rose quickly to about 80% in a few = weeks. =20 The most recent check showed 86% capacity which I find truly = remarkable. =20 It has proven to me that letting the battery sit inactive for the week = or two=20 between flights was very damaging and causing premature degradation of=20 capacity.  Concorde's criteria for discarding the battery = is the=20 capacity falling below 80%.
Some have asked how I test capacity.  Not = having an=20 official, and expensive, battery tester, I use the poor man's = method -=20 a corn cob resister sized to give me the required 1C discharge=20 rate.  Current is monitored using a shunt resistor and a high = quality=20 voltmeter.  I manually record current and integrate after reaching = the=20 cut-off voltage of 10V.
Chris
 
 
Chris Zavatson
N91CZ
360std
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