AGM battery strings [RE-wrenches]

[Kelly Keilwitz]

Wrenches,
Recent grid outages here have a few of our grid-connected, battery-based
customers wanting more battery capacity. Two of the systems have Concorde
AGM's in single, 48-volt strings. I'd like to take the 2-mo old, 104AH
(24-hr) set from one system and add it to the 6-mo old, 89AH set in another
system.
Do you see any problems with paralleling these different capacity strings?
Should I cable individually from each string (2+ & 2-), or will simple,
reverse return (1+ & 1-) flow be sufficient?

Thanks,
-Kelly


Kelly Keilwitz, P.E.
Whidbey Sun & Wind, LLC
Renewable Energy Systems
NABCEP Certified PV Installer
987 Wanamaker Rd, 
Coupeville, WA 98239
PH & FAX 360-678-7131
sunwind at whidbeysunwind.com
 


- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------