Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Sun, 6 Sep 2020 14:04:16 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 086KsY8O003932; Sun, 6 Sep 2020 16:55:01 -0400 Received: from outgoing-exchange-3.mit.edu (OUTGOING-EXCHANGE-3.MIT.EDU [18.9.28.13]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 086KsXAb003927 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 6 Sep 2020 16:54:33 -0400 Received: from w92exedge4.exchange.mit.edu (W92EXEDGE4.EXCHANGE.MIT.EDU [18.7.73.16]) by outgoing-exchange-3.mit.edu (8.14.7/8.12.4) with ESMTP id 086KsW1U031958 for ; Sun, 6 Sep 2020 16:54:33 -0400 Received: from w92expo30.exchange.mit.edu (18.7.74.42) by w92exedge4.exchange.mit.edu (18.7.73.16) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Sun, 6 Sep 2020 16:53:58 -0400 Received: from oc11exhyb1.exchange.mit.edu (18.9.1.60) by w92expo30.exchange.mit.edu (18.7.74.42) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Sun, 6 Sep 2020 16:54:32 -0400 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (104.47.70.103) by oc11exhyb1.exchange.mit.edu (18.9.1.60) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Sun, 6 Sep 2020 16:54:32 -0400 Received: from MWHPR10CA0013.namprd10.prod.outlook.com (2603:10b6:301::23) by DM6PR01MB5610.prod.exchangelabs.com (2603:10b6:5:152::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.15; Sun, 6 Sep 2020 20:54:31 +0000 Received: from CO1NAM03FT063.eop-NAM03.prod.protection.outlook.com (2603:10b6:301:0:cafe::f9) by MWHPR10CA0013.outlook.office365.com (2603:10b6:301::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.15 via Frontend Transport; Sun, 6 Sep 2020 20:54:31 +0000 Received: from mail-ed1-f50.google.com (209.85.208.50) by CO1NAM03FT063.mail.protection.outlook.com (10.152.81.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.16 via Frontend Transport; Sun, 6 Sep 2020 20:54:30 +0000 Received: by mail-ed1-f50.google.com with SMTP id q21so10838952edv.1 for ; Sun, 06 Sep 2020 13:54:30 -0700 (PDT) From: Ryan O'Connor To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Sun, 6 Sep 2020 13:54:17 -0700 Subject: Re: [OT] Simple LiPo charging circuit Thread-Topic: [OT] Simple LiPo charging circuit Thread-Index: AdaEkUg6P3/FDlfzRF2H5d3FQde4yw== Message-ID: References: <6091de9f-23e5-b862-5cde-28e7450429d0@gmail.com> <20200904030306.GA30954@laptop.org> <7d0c7aa5-e974-9e82-015e-2e3501768c5d@gmail.com> <20200904060223.GC30954@laptop.org> <6e6855d8-1672-c321-c397-0459849c1da3@gmail.com> List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.208.50 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.208.50; helo=mail-ed1-f50.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=FtpgSFgverO7tR2uUezLhIR60rttyjNVFbEQCTCXtp4=; b=boiX4rF315GZemkli+FcVfqWjbj0NYhho8u6G5KaZRIGQTBTvx1NxCKAy8nrGbXrXy 9LOjTaR7ytyBOkhhGoCwVJJ5Xccs2rchNTdMdv9L5crD3qmSRN/H5seRwEw0Mtr8J7S0 vXzUJjXyg3Ax0/S5Gax7HH/rWZ9HQ2whh/ewU1UE6JE4yA2uTykOeVGayole5u08cX4t Ryz4svyPD7ZopwgJRo9ThcFYRCWaB1vesQcQErzdfyG+rmVHdDullsqVGrZ5WIJul+Ai 5N19k92cxADDssHWptxn9sLq1ilUs3pJwIPtEldzEaSzn6/qpT0vdUa7NpD9B+FH9XPN XC/g== authentication-results: spf=pass (sender IP is 209.85.208.50) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com; mit.edu; dmarc=pass action=none header.from=gmail.com; errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-received: by 2002:a05:6402:1694:: with SMTP id a20mr18293500edv.286.1599425668489; Sun, 06 Sep 2020 13:54:28 -0700 (PDT) x-topics: [OT] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Bob, does your phone have a feature marketed as "fast charge"? As it may be set to that mode (in software), in which case it could be negatively impacting your battery life. It requires a fairly beefy charger of at least ~3000mAh. Ryan On Mon, 7 Sep 2020 at 05:34, Bob Blick wrote: > Hijacking the thread, I have a question about the battery in my mobile > phone. I'm careful about charging, and want to get as many useful years o= f > life as possible out of the battery. I try to never let the battery get t= oo > low, never charge the phone if it's hot, and never let it charge fully. > Based on the phone's gauge, I charge it when it's down to 40% and take it > off charge when it reaches 80 or 85%. I think this is probably a pretty > good way of doing it. I plug the charger into a timer so I don't have to > watch it, I'm not totally OCD :) > > My question regards preferred charging current. The charger that came wit= h > the phone will do my normal charge regime in about 20 minutes. The good > quality charger from a previous phone will take 90 minutes to do the same > thing. Neither charger noticeably heats the phone. > > Which is easier on the battery, high current for a short period of time, > or medium current for a longer time, both taking the battery from 40% to > 80% state of charge? > > Thanks, Bob > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .