Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751244AbWEWCC7 (ORCPT ); Mon, 22 May 2006 22:02:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751246AbWEWCC7 (ORCPT ); Mon, 22 May 2006 22:02:59 -0400 Received: from dvhart.com ([64.146.134.43]:5003 "EHLO dvhart.com") by vger.kernel.org with ESMTP id S1751244AbWEWCC6 (ORCPT ); Mon, 22 May 2006 22:02:58 -0400 Message-ID: <44726D47.8030306@mbligh.org> Date: Mon, 22 May 2006 19:02:47 -0700 From: "Martin J. Bligh" User-Agent: Mozilla Thunderbird 1.0.7 (X11/20051013) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Avi Kivity Cc: Christian Trefzer , Matthias Schniedermeyer , Alan Cox , Jan Knutar , Pau Garcia i Quiles , linux-kernel@vger.kernel.org Subject: Re: [IDEA] Poor man's UPS References: <200605212131.47860.pgquiles@elpauer.org> <20060521224012.GB30855@hermes.uziel.local> <200605221604.16043.jk-lkml@sci.fi> <20060522151303.GA4538@hermes.uziel.local> <1148312458.17376.54.camel@localhost.localdomain> <20060522154830.GA5344@hermes.uziel.local> <4471E39C.1070003@citd.de> <20060522194040.GC5995@hermes.uziel.local> <447214EF.50803@argo.co.il> In-Reply-To: <447214EF.50803@argo.co.il> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 921 Lines: 20 >> Exactly, and since I cannot afford to buy one I'd have to build it >> myself using mainly car batteries. The most complex part would be to >> charge the batteries in a way that won't kill them over time. Building >> such stuff into the PSU after the secondary coil and AC/DC converter >> would save the double-conversion loss, therefore making this ideal for a >> single machine. But I'm still brainstorming, lacking both money and >> time. > > Led/acid batteries are dangerous. Don't use them unless you know exactly > what you are doing. Buy an intelligent charger for an RV. They're designed to do pretty much exactly that (deep cycle marine batteries, probably). M. - 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/