You beat me to that one, Kent. Also, if your VRLA battery is emitting any gas, you've got trouble.
Larry Crutcher Starlight Solar Power Systems On Jan 5, 2012, at 5:58 PM, Kent Osterberg wrote: 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 > [email protected] > www.trojanbattery.com > <Mail Attachment.png> > > Happy Holidays > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] 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: [email protected] > [mailto:[email protected]] 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 > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > > This e-mail message and any attachments that accompany it may contain > information that is confidential, privileged, or protected from disclosure. > It is intended solely for the use of the individual(s) to whom it was > intended to be addressed. If you have received this e-mail by mistake, or you > are not the intended recipient, any reading, disclosure, copying or other use > of this communication is strictly prohibited. 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