Peter,
The DEKA charging manual that I have been working from for their sealed batteries (AGM and Gel) quote 30% of C20. And .DEKAs literature also has a maximum charging voltage of 2.35 VPC. Not sure about the other brands. Thanks, Walt From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter Parrish Sent: Tuesday, September 15, 2009 7:33 AM To: 'RE-wrenches' Subject: [RE-wrenches] Charging AGM Batteries I have been told that AGM batteries can withstand pretty aggressive charging rates, with a bulk rate being ½ of C/20. For example a MK 8A8D, with a C/20 of 245 A-h, would start with 122 A. If this is okay, can I still use the standard 14.6 V value for switching from Bulk to Absorb? What about ambient temperature effects at high charge rates? We have need from time to time to charge AGMs as quickly as we can safely do so, so any information on high charge rates would be appreciated. - Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP TM Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
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