It looks like I will be following your advice. The hazmat shipping for the lithium batteries was going to be 175% of the price. I just ordered some supercaps instead.
Ben On 10/24/2010 12:51 PM, Martix wrote: > I suggest using double-layer super capacitor* intead of Lithium backup > battery. These capacitors stores energy for a long time, like a > battery and they have much longer lifetime. 0,2 F capacity should be > enough for RTC backup on several hours, maybe days. > > * > http://cz.farnell.com/jsp/search/browse.jsp?N=1002210+5117013+5087727+5400445&No=0&getResults=true&appliedparametrics=true&locale=cs_CZ&catalogId=&prevNValues=1002210+5117013&filtersHidden=false&appliedHidden=false&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp%3FN%3D1002210%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Dcs_CZ%26catalogId%3D%26prevNValues%3D1002210 > > Best regards, > > Martix > > 2010/10/24 Alfa21<freerun...@my.is.it>: > >> 2010-10...@20:44 Benjamin Deering >> >>> Has anyone done this replacement before? any gotchas? >>> >> no, but I think it's not too difficult if you have a little experience with >> DIY. >> I've this (known) problem too but I'm afraid if I replace the battery it'll >> die as the old one... not sure... but I think I can live with that and so I >> never remove the main battery. >> >> >>> Also,as anyone found a source for replacement torx case screws? >>> >> I think it's easy to find in any good hardware shop (not computer-hardware >> eh! the one that sells you screwdrivers, electric drills& Co.) >> >> -- >> ALFA21 IS PROVIDED "AS IS" AND WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR >> IMPLIED. >> >> _______________________________________________ >> Openmoko community mailing list >> community@lists.openmoko.org >> http://lists.openmoko.org/mailman/listinfo/community >> >> > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > > _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
