Yuasa NP series sealed rechargeable lead-acid battery application manual Relates to YUASA NP series but of general application with due care. http://www.battery-usa.com/Catalog/NPAppManual%28Rev0500%29.pdf --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .