Steve I appreciate your thoughts and don't disagree with them. The last 20 years we've gone from panels that were $10 a watt To panels that are two dollars A Watt and cheaper! It makes it easier for some poor guy off grid to buy enough panels to get the job done now.
It's still Tough where I am with maybe half an hour of sunlight average for two months out of the year. And that can be June and July! Just kidding ! If you don't have a generator around here you're in the dark in the winter Later, Bob Ellison On Aug 7, 2013, at 6:11 PM, Steve Higgins <st...@surrette.com> wrote: > Maybe, I’m overstepping here… but here goes. > > In most off grid systems you are going to run just a tad bit hotter > voltage/time. This is because most of the batteries that are sold into this > market were really designed and meant for Industrial applications. The > industrial application assumes that you are pretty much charging the battery > with a stiff grid sourced current based charger every single night. > > In most off grid systems the customer is slowly letting the battery fall to a > 25% or 50% DOD state of discharge before enabling a fossil fuel source to > bring the battery to full state. When these batteries are run at lower > state for a period of time they need a bit more voltage to remove the > sulfation that has developed on the plates. > > What I’ve found over the last year is many people are depending on way too > small of an array to get any battery bank charged, and of course are very > reluctant to use a genset to power an inverter to charge the batteries. > This leads to poor SG’s and eventual failure. > > It also amazes me with how many people don’t even own a hydrometer to check > the true state of charge on their battery. Talked with a guy that has his > batteries for 5 years and has NEVER taken an SG measurement. > > > > Steve Higgins > Technical Services Manager > M: +1.206.790.5840 > F: +1.902.597.8447 > Surrette Battery Company > Exclusive manufacturer of > <rollsa5da08> > > > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of RE Ellison > Sent: Wednesday, August 07, 2013 2:29 PM > To: al...@positiveenergysolar.com; RE-wrenches > Subject: Re: [RE-wrenches] Trojan L-16s > > I would be more inclined to think it's because of a denser plate material in > the larger batteries > > I know surrettes need longer absorbs and I believe a bit higher of a charging > voltage to remain happy > > And I generally run the Trojan L16s Just a bit higher than normal > > > > > Bob Ellison > > On Aug 7, 2013, at 3:33 PM, Allan Sindelar <al...@positiveenergysolar.com> > wrote: > > Eric, > I kept this in my inbox for awhile, and finally had to ask - where did you > get this information? I have never heard this recommendation - to charge a > taller flooded lead acid battery to a higher voltage just because it's > taller. I guess I see the apparent logic - more gassing addresses a potential > for more stratification of the electrolyte - but if true, why have I never > seen this in any battery service guide? What's your source? And has anyone > else heard of this? > Thanks, Allan > > Allan Sindelar > al...@positiveenergysolar.com > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder and Chief Technology Officer > Positive Energy, Inc., a Certified B CorporationTM > 3209 Richards Lane > Santa Fe, New Mexico 87507 > 505 424-1112 office 780-2738 cell > www.positiveenergysolar.com > On 7/16/2013 7:53 AM, eric.bent...@schneider-electric.com wrote: > > Hi Drake, > The L16 is quite popular in RE apps...but they typically require a bit higher > charge voltage to reach the correct SOC than their shorter counterparts (i.e. > T105 golf cart), > because they are a taller battery (stands to reason .....specific "gravity"). > Make sure they are in a vented enclosure if off-gassing will be an issue. > Eric > _____________________________________________________________________________________ > > > Eric Bentsen | Schneider Electric | Solar Business | UNITED STATES > | Technical Support Representative > Phone: +(650) 351-8237 ext. 001# | > Email: eric.bent...@schneider-electric.com | Site: > www.schneider-electric.com/solar | Address: 250 South Vasco Rd., > Livermore, CA 94551 > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & 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 email and its attachments have been scanned by iConnection E-Mail > Firewall for viruses, spam, and malicious content. The information > transmitted in this email is intended only for the entity or person to which > it is addressed and may contain confidential/privileged material. If you > received this in error, please contact the sender and delete the material > from any computer. Any review, retransmission, dissemination, or other use of > this information by persons or entities other than the intended recipient is > strictly prohibited. %^^% > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & 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 >
_______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & 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
