Hi Dwayne I=B4m also about to design a (small) lithium cell and charger system. (as a part a small thingy) See ongoing thread "Looking for Lithium cells" I=B4m not yet at defining the charger, but there are plenty controller chips= available from different manufacturers, from simple onecell charger that= pulse on/off from a wall trafo, to much more advanced. I=B4ve seen Maxim, Linear technology, National Semiconductor... you could maybe also try Philips, ST... Maybe we could also integrate it in out PIC, if we can guarantee= reliability. But the biggest problem is getting hold of the cells. Where do you get yours from? Type and size? I feel we can cooperate on this somehow :) /Morgan Tack f=F6r ditt meddelande 22:54 2002-08-28 enligt nedan: >Good day to all. > >I am taking over a project which uses a 2 cell Li-ion battery. The >existing battery charger looks like a lawsuit waiting to happen: no cell >equalization, no voltage limit. > >Does anyone have a favorite charging circuit or a preferred chip / chip set >that works well for them? I could roll my own but figured that I'd tap the >collective experience of list members first. > >Many thanks! > >dwayne > >-- >Dwayne Reid >Trinity Electronics Systems Ltd Edmonton, AB, CANADA >(780) 489-3199 voice (780) 487-6397 fax > >Celebrating 18 years of Engineering Innovation (1984 - 2002) > .-. .-. .-. .-. .-. .-. .-. .-. .-. .- > `-' `-' `-' `-' `-' `-' `-' `-' `-' >Do NOT send unsolicited commercial email to this email address. >This message neither grants consent to receive unsolicited >commercial email nor is intended to solicit commercial email. > >-- >http://www.piclist.com#nomail Going offline? Don't AutoReply us! >email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu