On Sunday 27 April 2003 01:24 am, Picdude wrote: > Now, all I need is to figure out the charge and discharge > characteristics of a (or this) gel-cell, and build a ckt to monitor > the remaining power and one to charge the gel-cell. I haven't > found a suitable gel-cell charger ckt on the net yet, but still > looking. And if I find the discharge specs, I'm sure I can whip up > a quick PIC-based (of course!) power monitor. I can't even find a > website for Yuasa. Have you tried Googling for yuasa datasheet Among the first three results are some pointers to http://www.yuasa-exide.com Lead-acid cells are easy to charge from variable voltage supplies (or even current-limited supplies with voltage monitoring). -- Ned Konz http://bike-nomad.com GPG key ID: BEEA7EFE -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads