Article View: sci.electronics.design
Article #433Re: Semi [OT]: What is the black deposit on the underside of wet lead acid battery vent caps?
From: atec77
Date: Mon, 27 Jun 2011 09:43
Date: Mon, 27 Jun 2011 09:43
34 lines
2491 bytes
2491 bytes
On 27/06/2011 7:15 PM, Dennis wrote: > "Rheilly Phoull"<rheilly@bigslong.com> wrote in message > news:MqmdnVeUp46ZqpXTnZ2dnUVZ_vKdnZ2d@westnet.com.au... >> On 6/27/2011 2:42 PM, Dennis wrote: >>> Does anyone know what the black smudgy deposit is that forms on the >>> underside of wet cell lead acid automotive batteries is? >>> >>> It looks a little like soot and is easily wiped away. >>> >>> I've heard it can suggest the battery is failing. Is there any substance >>> to >>> this or is it just an anecdotal red herring? >>> >>> Cheers >>> D. >>> >>> >> The technical term is "Krud" :-) >> Might be worn off the casing ?? >> > > I nearly used the common trade term of "black shit", "krud" is more > professional. > > It could be from the casing but I wouldn't think so as it's to be deposited > on the bottoms of the vent plugs as if carried there by the electrolyte > "bubbles" during charging. > > a by product of the charging , when enough "black shite" accuumuates the battery is buggered -- X-No-Archive: Yes
Technical Details
Message-ID:
<iu9jbu$s57$1@dont-email.me>Path:
arc1-ca.pugleaf.net!g2news1.google.com!news3.google.com!feeder.news-service.com!feeder.news-service.com!85.214.198.2.MISMATCH!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mailReferences:
<o7-dnSpXZMnau5XTnZ2dnUVZ_o6dnZ2d@westnet.com.au> <MqmdnVeUp46ZqpXTnZ2dnUVZ_vKdnZ2d@westnet.com.au> <9qKdna9ky4-x15XTnZ2dnUVZ_s6dnZ2d@westnet.com.au>Show Full Headers
Complete Article Headers
X-Google-Thread: a5a6238865,9fd0da4172ca4fb2 X-Google-Attributes: gida5a6238865,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news3.google.com!feeder.news-service.com!feeder.news-service.com!85.214.198.2.MISMATCH!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: atec77 <atec77@hotmail.com> Newsgroups: sci.electronics.design,aus.electronics Subject: Re: Semi [OT]: What is the black deposit on the underside of wet lead acid battery vent caps? Date: Mon, 27 Jun 2011 19:43:23 +1000 Organization: A noiseless patient Spider Lines: 35 Message-ID: <iu9jbu$s57$1@dont-email.me> References: <o7-dnSpXZMnau5XTnZ2dnUVZ_o6dnZ2d@westnet.com.au> <MqmdnVeUp46ZqpXTnZ2dnUVZ_vKdnZ2d@westnet.com.au> <9qKdna9ky4-x15XTnZ2dnUVZ_s6dnZ2d@westnet.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Mon, 27 Jun 2011 09:43:27 +0000 (UTC) Injection-Info: mx04.eternal-september.org; posting-host="boEWUuaP+eHgRsXSv318Bg"; logging-data="28839"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+D7TjZCqNrmzyVfpR371us" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.18) Gecko/20110616 Thunderbird/3.1.11 In-Reply-To: <9qKdna9ky4-x15XTnZ2dnUVZ_s6dnZ2d@westnet.com.au> Cancel-Lock: sha1:2xwaUBkWNnMab2EznGHhFelxsek=