[RE-wrenches] battery venting; Corrosion

[Kent Osterberg]

John,

Could you clarify units? "0.418 Liters/AH" is that per charge cycle? per 
hour? per minute? per cell?

Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com



On 1/5/2012 4:18 PM, John DeBoever wrote:
>
> Hello Wrenches,
>
> Here are some very general guidelines on the subject for consideration:
>
> o*Free flow ventilation is required within lead acid battery room / 
> enclosure:*
>
> Batteries produce Hydrogen during charge, depending on the specific 
> design and application
>
> The gassing appears approximately around 80%-90% SOC, depending on the 
> specific design and application
>
> The amount of gassing increase with the battery ageing
>
> Hydrogen becomes explosive at a concentration of 4%
>
> Hydrogen levels must be kept below 1% or 2% percent
>
> Flooded batteries typically produce .418 Liters/AH of Hydrogen at STC, 
> depending on the specific design and application
>
> VRLA batteries typically produce .004 to .013 Liters/AH of Hydrogen at 
> STC,  depending on the specific design and application
>
> o*Cleaning maintenance guidelines: *
>
> Batteries are attract dust, dirt, and grime. Keeping them clean will 
> help one spot trouble signs if they appear and avoid problems 
> associated with grime.
>
> 1. Check that all vent caps are tightly in place.
>
> 2. Clean the battery top with a cloth or brush and a solution of 
> baking soda and water. When cleaning, do not allow any cleaning 
> solution, or other foreign matter to get inside the battery.
>
> 3. Rinse with water and dry with a clean cloth.
>
> 4. Clean battery terminals and the inside of cable clamps using a post 
> and clamp cleaner. Clean terminals will have a bright metallic shine.
>
> 5. Reconnect the clamps to the terminals and thinly coat them with 
> petroleum jelly (Vaseline) to prevent corrosion.
>
> 6. Keep the area around batteries clean and dry.
>
> Hope this help,
>
> John
>
> John F. DeBoever
>
> Global Projects & Technical Director -- Renewable Energy
>
> *Trojan Battery Company*
>
> 12380 Clark Street
>
> Santa Fe Springs, CA 90670
>
> Tel: +1-562-236-3000 Ext. 3139
>
> Cell: +1-845-514-7600 -- NY office time zone: USA EST (GMT-5)
>
> Fax: +1-562-236-3239
>
> jdeboever at trojanbattery.com <mailto:jdeboever at trojanbattery.com>
>
> www.trojanbattery.com <http://www.trojanbattery.com/>
>
> Description: Description: Description: Description: 
> C:\Users\ecastro\AppData\Local\Microsoft\Windows\Temporary Internet 
> Files\Content.IE5\0VK735AY\MC900116474[1].wmf
>
>     Happy Holidays
>
> -----Original Message-----
> From: re-wrenches-bounces at lists.re-wrenches.org 
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of bob 
> ellison
> Sent: Thursday, January 05, 2012 12:18 PM
> To: 'RE-wrenches'
> Subject: Re: [RE-wrenches] battery venting; Corrosion
>
> I have had great luck by heating Vaseline to the hot liquid state then 
> brush it on all the exposed lead and I dip the cable ends also.
>
> Doing this I have had 1 terminal that got corroded out of several 
> hundreds.
>
> That gets you a thin coat and lasts for years.
>
> "Clean and tight" is nice but it gets corroded at some point, and I 
> hate cleaning 1 terminal or 20!
>
> Later,
>
> Bob Ellison
>
> -----Original Message-----
>
> From: re-wrenches-bounces at lists.re-wrenches.org
>
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Larry 
> Crutcher, Starlight Solar Power Systems
>
> Sent: Thursday, January 05, 2012 10:37 AM
>
> To: RE-wrenches
>
> Subject: Re: [RE-wrenches] battery venting; Corrosion
>
> Almost all RV's have a small, poorly vented battery box with 4 GC2 
> batteries. We see corrosion all the time. When we replace batteries, 
> we use zinc coated copper terminals and apply a thin layer of grease 
> with a toothbrush to every exposed portion of the connectors. This 
> simple step, with the occasional reapplication, keeps all terminals as 
> fresh as the day installed for many years. I am speaking from 
> experience of hundreds of installations.
>
> Larry Crutcher
>
> Starlight Solar Power Systems
>
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