From owner-freebsd-mobile@FreeBSD.ORG Wed Oct 19 04:42:52 2011 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A3E75106566B for ; Wed, 19 Oct 2011 04:42:52 +0000 (UTC) (envelope-from onyx@z-up.ru) Received: from mx.z-up.ru (mx.z-up.ru [92.50.244.44]) by mx1.freebsd.org (Postfix) with ESMTP id 5A5668FC0A for ; Wed, 19 Oct 2011 04:42:52 +0000 (UTC) Received: from ob15_2.ktz.lan (unknown [172.16.0.4]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx.z-up.ru (Postfix) with ESMTPSA id 281FD1149C for ; Wed, 19 Oct 2011 08:42:43 +0400 (MSD) From: Dmitry Kolosov To: freebsd-mobile@freebsd.org Date: Wed, 19 Oct 2011 08:44:17 +0400 User-Agent: KMail/1.13.5 (FreeBSD/8.2-STABLE; KDE/4.4.5; i386; ; ) References: <201110182335.15862.onyx@z-up.ru> <20111019135942.C21255@sola.nimnet.asn.au> In-Reply-To: <20111019135942.C21255@sola.nimnet.asn.au> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201110190844.17703.onyx@z-up.ru> Subject: Re: Battery charge limiting X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Oct 2011 04:42:52 -0000 > I've never heard of such a theory as limiting charge to prolong battery > life, not with Lithium Ion batteries anyway; nor have I ever seen any > such as a BIOS option. 'Common' on which brand/s of notebooks? > > Can you provide any links to articles discussing this? http://hintsforums.macworld.com/archive/index.php/t-104440.html http://askubuntu.com/questions/34452/how-can-i-limit-charging-capacity-to- extend-a-batterys-lifespan Lenovo provides such programs with their new products. A program can hold a battery at 70-80%% while it not used. > I don't think control over a notebook's charging is possible in FreeBSD; > this is usually managed by an Embedded Controller and ACPI merely passes > on the the states reported by that and by the battery itself. May be modern EC provides some controlling methods or so?