Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752332AbWKBVWJ (ORCPT ); Thu, 2 Nov 2006 16:22:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752360AbWKBVWJ (ORCPT ); Thu, 2 Nov 2006 16:22:09 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:266 "EHLO spitz.ucw.cz") by vger.kernel.org with ESMTP id S1752332AbWKBVWG (ORCPT ); Thu, 2 Nov 2006 16:22:06 -0500 Date: Thu, 2 Nov 2006 21:20:32 +0000 From: Pavel Machek To: Bill Davidsen Cc: Henrique de Moraes Holschuh , Shem Multinymous , David Zeuthen , Richard Hughes , David Woodhouse , Dan Williams , linux-kernel@vger.kernel.org, devel@laptop.org, sfr@canb.auug.org.au, len.brown@intel.com, benh@kernel.crashing.org, linux-thinkpad mailing list , Jean Delvare Subject: Re: [ltp] Re: [PATCH v2] Re: Battery class driver. Message-ID: <20061102212032.GC4887@ucw.cz> References: <1162041726.16799.1.camel@hughsie-laptop> <1162048148.2723.61.camel@zelda.fubar.dk> <41840b750610281112q7790ecao774b3d1b375aca9b@mail.gmail.com> <20061031074946.GA7906@kroah.com> <41840b750610310528p4b60d076v89fc7611a0943433@mail.gmail.com> <20061101193134.GB29929@kroah.com> <41840b750611011153w3a2ace72tcdb45a446e8298@mail.gmail.com> <20061101205330.GA2593@kroah.com> <20061101235540.GA11581@khazad-dum.debian.net> <454A2FC2.4060107@tmr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <454A2FC2.4060107@tmr.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1055 Lines: 33 Hi! > >Well, "Wh" measures energy and not power, and "Ah" > >measures electric charge > >and not current, so it would be better to make that: > > > >capacity_*_energy (Wh-based) > > > >and > > > >capacity_*_charge (Ah-based) > > > >Also, should we go with mWh/mAh, or with even smaller > >units because of the > >tiny battery-driven devices of tomorrow? > > > Having seen a French consultant with a Windows laptop > reporting mJ (Joules) I bet that came from the hardware. > And given that laptop batteries run at (almost) constant > voltage, could all of these just be converted to mWh for > consistency? li-ions run from 4.2V down to 3.6V without problems, and you can use them down to 3.0V. I've ran zaurus down to 3.3V, IIRC. That's quite a big range. -- Thanks for all the (sleeping) penguins. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/