You could easily charge your lead-acid battery from a simple dynamo arrangement, and if you do sufficient cycling, you need not worry about the state of charge. Chris ----- Original Message ----- From: To: Sent: Tuesday, November 26, 2002 6:56 PM Subject: Re: [OT]: Bike gear ratios > > I am planning on using a lead-acid cell beause they are cheap and the > voltage is a reliable indicator of state-of-charge. An LED will be green > if the voltage is OK, red if it is below a threshold. I could even put an > audio alarm on it. Hope to put this where it will be visible by the > rider. > > --Lawrence > > -- > 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#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body