The Compass
uses a similar battery, listed as TL-2150, which is a 3.6V
lithium cell (labeled "SIZE 1/2 AA"). I can't see the specs of the
1520's battery without removing it, but does anyone know if such
batteries are still made?
Untagged (clip into a holder) 1/2AA 3.6V cells appear to be used in some
flavours of Apple Mac (I think my LC has one inside), and seem to be
http://www.allcorp.com is a good net/email source of these parts, with and
without leads. USA, but they ship anyplace I think. The early mac II series
often used the version with leads, later on without. Ironically the early
macs are often still good after 10 years or more, its the later models that
last just a few years.