AGM battery strings [RE-wrenches]
Kelly Keilwitz
kelly at whidbeysunwind.com
Thu Nov 30 08:20:18 PST 2006
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
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