Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751756Ab0DLN35 (ORCPT ); Mon, 12 Apr 2010 09:29:57 -0400 Received: from mail-bw0-f219.google.com ([209.85.218.219]:51798 "EHLO mail-bw0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750827Ab0DLN3z (ORCPT ); Mon, 12 Apr 2010 09:29:55 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; b=XMcET2IgPyP+r/R1TkG2z+s/vjN9I30Xv1urfthXGpbN5e2FyI1biUWzLkaP8ESsna LAqIMiI41+MGVO6QBvk8FvQw/kadsDQnW9A3dwM4DjE6Ls5JrYRvny3t6Nn4qXUMGmPh ycLn0NCYro3xu5MzpF/zUO3q1wwLUbJS1Y6FU= MIME-Version: 1.0 From: Mohamed Ikbel Boulabiar Date: Mon, 12 Apr 2010 15:28:37 +0200 Message-ID: Subject: Low-Level and Long-Term Battery Control To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1199 Lines: 31 Hi, Is there any function in the Linux kernel that control the charging/discharging of the battery to provide better lifespan ? (add some years to its life ?) For Laptops, it is better to extract the battery from the Laptop when the computer will be on power for a long period. I ask if the kernel can do such control without the user intention and in an automatic way. Some BIOS provide to the user to select whether to block the battery charging to 50% to make it stand for more time. And Many people (like me) forget their laptops on power until the battery no more can hold energy after 2minutes of no power. I am not sure for the MacBook side, but it seems they don't suffer from such problem in the same degree as other laptop users. I think it is a serious problem because if you keep you battery on power for one week you will detect it becomes holding only 50% of its energy compared to when first bought. Thanks, Mohamed-Ikbel BOULABIAR -- 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/