Panasonic HHC RL-H1800 (HHC RL-H1400)
The Panasonic HHC RL-H1800 is a programmable calculator with 12 digits precision and formula input logic. It has 65 keys, and an LCD (liquid crystal) display. The power source is 4xAA.
Facts at a glance:
If you have a Panasonic HHC RL-H1800 that is no longer working, you can first try replacing the 4xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: