> I've not seen temperature monitoring mentioned for SLAs. Presumably > it's impractical because of their bulk and sealed nature The charger I use on my "mobility" scooter has a temp sensor which clamps on to a battery terminal. http://www.navstore.com/detail.aspx?ID=1712 Jack p.s. - I'm agnostic on the "de-sulfation" feature; 6 months in, things are copacetic... -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist