Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750733AbWEVPsp (ORCPT ); Mon, 22 May 2006 11:48:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750729AbWEVPsp (ORCPT ); Mon, 22 May 2006 11:48:45 -0400 Received: from mail.gmx.de ([213.165.64.20]:38590 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1750733AbWEVPso (ORCPT ); Mon, 22 May 2006 11:48:44 -0400 X-Authenticated: #2308221 Date: Mon, 22 May 2006 17:48:30 +0200 From: Christian Trefzer To: Alan Cox Cc: Jan Knutar , Pau Garcia i Quiles , linux-kernel@vger.kernel.org Subject: Re: [IDEA] Poor man's UPS Message-ID: <20060522154830.GA5344@hermes.uziel.local> 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> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="TB36FDmn/VVEgNH/" Content-Disposition: inline In-Reply-To: <1148312458.17376.54.camel@localhost.localdomain> User-Agent: Mutt/1.5.11 X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2100 Lines: 55 --TB36FDmn/VVEgNH/ Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 22, 2006 at 04:40:58PM +0100, Alan Cox wrote: >=20 > Lead acid batteries should be kept well charged to avoid sulphation and > always full charged when recharging, preferably using a charger that > will do proper three step charging. "Cycling" a lead acid battery is a > great way to destroy it. >=20 So it is better to use only one battery (or an array thereof) which is sort of charged and discharged at the same time, or is this idea just as screwed..? I don't have a degree in electronics, mind you : ) Might be easier to build something that keeps a battery well maintained and switches in case of power outage. With large enough condensors to bridge the gap, which would also iron out any peaks and stuff, this should work pretty well. Kind regards, Chris --TB36FDmn/VVEgNH/ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) iQIVAwUBRHHdTV2m8MprmeOlAQLv7hAAoruJSr9tjowz7/TcSHz5PNFwqLerzPrP TW7+F7U3wdWSSxjt+ijNJUo2/MlSzxC7jBmzApY1U24z+U8q6zS5TVoU1ncBGjTP dqsRz+qFGzt5e5AqmZMDmVwETnA1Gg9Ev+d5h2y5I8Fpc2WnWyZ3eiRNn9AAjENR D2dD1HSq7X5fSAGfkypPqNzDihOeJfqJWmThGw6RKMl6lc8gA85tAd44Y8C09Gi+ BUZupdw2MRQuTn0gnEawE2dV1bCSL1aud9y68XAAjUmLVm3wy7veLGo0ylq28nxN SlGwr5l7ksnRuBHqc7gU88fmsEQFzjDtolaDnalL8Uucxm3QkUnA4ls+je/rcFP9 CGbA1QYlCm1ZqFUK/809ila2zmjLKdcbBoOmNH8gYWshJMyHfFNDKAEEqTOGias+ hfBnRukDt4RjGj6YO8kxuebLqryWzz2xZG4OfPJe/qQSABYKwf4kOXf7DAbj35PR fkHIY+zu7IpsLkjOSaDAlAjUgWBeEWstZlKmPa9QOLdjmchdphSXXQzGmM6s1AkQ QSbWO10mPg8idb/klNvz0//rNO5j+BNlzIXGN3XNvVO0SP/oI3RxdTwmmGx1D9oa LBaRgfTwodwz8aT5WPKlgr+pCG5544KyRa3QOnAuchG2vwbQb70PSx0WwApWn+8+ T8dGuz98nzQ= =FZ5l -----END PGP SIGNATURE----- --TB36FDmn/VVEgNH/-- - 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/