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Sender: "piclist-bounces@mit.edu" Date: Sat, 15 Feb 2020 06:12:03 -0800 Subject: Re: [EE] large USB power banks Thread-Topic: [EE] large USB power banks Thread-Index: AdXkC/qCVNuaLhfySN6RUItqi+Iouw== Message-ID: <5E47FC33.4080704@narwani.org> References: 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: TempError X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: None (protection.outlook.com: narwani.org does not designate permitted sender hosts) dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=narwani.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:Reply-To:To:References:Subject:Sender:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=ysIJhZ+JKeAMqEV86PD3y+W8YSUvTmVOO+muWfUfWCs=; b=f3XHPngeX2c2GEp9C2pVUNsyaW RT8VxN0u6DMxsD6ws2cnvQUEnjjEmgNLNaCoShaB6nQHH8/0Ja8ZBahHfj6nmqvdSalOgNydL/ZZU eP5a+dasntOfajrM/OvW/JOUrd99Moc82hmfgYULKLKXP8F9HAYjQJh0cfkbFiOx8ffIpyZJpoxqX KU86700H9httfEQNhABq/mNR3hA8Fie1qvKjbZ/9UchSabivCKgLFzQBB5+Rs5ehzjR7RsoE+Qnoy wxDIb70fDT/ttIokskNZ/zvsWS7gmABZWXh6tHXhnUTYnjAJP2yY13G7xTIro9y3rTRe69U/TvVrw SvEI1Kxg==; authentication-results: spf=none (sender IP is 199.188.201.10) smtp.mailfrom=narwani.org; mit.edu; dkim=pass (signature was verified) header.d=narwani.org;mit.edu; dmarc=bestguesspass action=none header.from=narwani.org;compauth=pass reason=109 user-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 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-source-args: x-source-dir: x-antiabuse: Sender Address Domain - narwani.org x-source: x-authenticated-sender: premium47.web-hosting.com: ca4@narwani.org x-topics: [EE] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 You should specifiy the minimum capacity you need. One of the more important criteria I look for is the ability for the=20 power bank to stay on with very little load, as many devices I use will=20 not draw enough current at times and the power bank will shut down. =20 This one has a feature where if I turn on the built-in LED light, it=20 will keep the USB ports on... https://www.amazon.com/gp/product/B00VWV8LD4 Cheers, -Neil. On 2/14/2020 11:56 AM, David Van Horn wrote: > I'm looking for a couple of large USB power banks, and hoping to get some= recommendations. > I see mAh ratings that are starting to sound like stun gun voltages, whic= h is why I'm not just grabbing the biggest number on Amazon > > The application is astrophotography, running a bunch of peripherals inclu= ding a lens heater. > > > -- > David VanHorn > Lead Hardware Engineer > > Backcountry Access, Inc. > 2820 Wilderness Pl, Unit H > Boulder, CO 80301 USA > phone: 303-417-1345 x110 > email: david.vanhorn@backcountryaccess.com > --=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 .