Hi all, what about the following link? http://www.nrel.gov/features/20100708_battery.html
73s Fabio IW8QKU/5 *Subject: [amsat-bb] ARISSat-1 battery From: g0mrf@xxxxxxx Date: Mon, 29 Aug 2011 08:50:45 -0400 (EDT) Hi all. The ARISSat team seem to have reached the conclusion that the Silver Zinc battery technology is not really suited for an orbiting satellite with a 55 / 35 minute charge and discharge cycle. I wonder if a couple of small Lithium polymer battery packs would be a suitable replacement for ARISSat-2 ? I note that there are safety issues with Li-ion technology, but there are some small battery packs of 10Whr / 20Whr 30Whr modules which have NASA approval for manned space flight. >From the odd snippet of information on the power required during eclipse (is it 7 Watts for 35 minutes) it looks like 20-25% depth of discharge for the 20Whr battery pack. That's probably OK for a 9 month mission ?? Thanks David G0MRF http://www.clyde-space.com/documents/1902* _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
