Hewlett-Packard HP 300sPlus (Scientific Calculator)
The Hewlett-Packard HP 300sPlus is a scientific calculator with 10 digits precision and formula input logic. It has 315 functions, 50 keys, and an LCD (liquid crystal) display. The power source is 1xLR44.
Facts at a glance:
If you have a Hewlett-Packard HP 300sPlus that is no longer working, you can first try replacing the 1xLR44 battery. If that doesn't solve the problem, then it's probably easiest to just buy a new one, as this model is still currently available.