[RE-wrenches] Trojan L-16s

[Steve Higgins]

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
[cid:rollsa5da08]<http://www.rollsbattery.com>

From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of RE Ellison
Sent: Wednesday, August 07, 2013 2:29 PM
To: Allan at 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 <allan at positiveenergysolar.com<mailto:allan at 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
Allan at positiveenergysolar.com<mailto:Allan at 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<http://www.positiveenergysolar.com/>
On 7/16/2013 7:53 AM, Eric.Bentsen at schneider-electric.com<mailto:Eric.Bentsen at 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.bentsen at schneider-electric.com<mailto:eric.bentsen at schneider-electric.com>  |   Site: www.schneider-electric.com/solar<http://www.schneider-electric.com/solar>  |   Address: 250 South Vasco Rd., Livermore, CA 94551

_______________________________________________
List sponsored by Home Power magazine

List Address: RE-wrenches at lists.re-wrenches.org<mailto:RE-wrenches at 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<http://www.re-wrenches.org/etiquette.htm>

Check out participant bios:
www.members.re-wrenches.org<http://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. %^^%
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130807/81b9e538/attachment-0003.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: rollsa5da08
Type: image/jpeg
Size: 11941 bytes
Desc: rollsa5da08
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130807/81b9e538/attachment-0003.jpe>