X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 26 Dec 2007 17:58:27 -0500 Message-ID: X-Original-Return-Path: Received: from vms048pub.verizon.net ([206.46.252.48] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2613187 for lml@lancaironline.net; Tue, 25 Dec 2007 16:39:21 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.252.48; envelope-from=tom.gourley@verizon.net Received: from jacky0da39824a ([71.111.120.216]) by vms048.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JTM00847K4BETD7@vms048.mailsrvcs.net> for lml@lancaironline.net; Tue, 25 Dec 2007 15:38:40 -0600 (CST) X-Original-Date: Tue, 25 Dec 2007 13:38:33 -0800 From: "Tom Gourley" Subject: Re: [LML] Batteries - 2 x 12 = 24 X-Original-To: "Lancair Mailing List" Reply-to: "Tom Gourley" X-Original-Message-id: <002101c8473e$801c9380$650610ac@jacky0da39824a> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Mailer: Microsoft Outlook Express 6.00.2900.3138 Content-type: multipart/alternative; boundary="----=_NextPart_000_001E_01C846FB.7154D620" X-Priority: 3 X-MSMail-priority: Normal This is a multi-part message in MIME format. ------=_NextPart_000_001E_01C846FB.7154D620 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable "this would let me use 12v accessories, as long as they did not draw = much, like a CD player, or if they were balanced on two sides, like a = set of seat heaters" I don't think this would be a good idea. If you're simply replacing a = 24V battery with two series connected 12V batteries then your charging = system is still set up for a single 24V battery. This system assumes = the same amount of charging current flows through all battery cells. By = connecting a 12V device to one of the batteries it will receive less = charging current than the other battery as some current will be diverted = to the connected device. The result will be uneven charging and = premature failure of one of the batteries. Tom Gourley ------=_NextPart_000_001E_01C846FB.7154D620 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
"this would let me use 12v = accessories, as long=20 as they did not draw much, like a CD player, or if they were balanced on = two=20 sides, like a set of seat heaters"
 
I don't think this would be a good = idea.  If=20 you're simply replacing a 24V battery with two series = connected 12V=20 batteries then your charging system is still set up for a single 24V=20 battery.  This system assumes the same amount of charging current = flows=20 through all battery cells.  By connecting a 12V device to one of = the=20 batteries it will receive less charging current than the other battery = as some=20 current will be diverted to the connected device.  The result will = be=20 uneven charging and premature failure of one of the = batteries.
 
Tom Gourley
 
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