HP 10s Scientific Calculator (F2214AA#AK6) - Advanced Graphing Calculator for High School & College Students, Engineers & Professionals - Perfect for Algebra, Calculus, Statistics & Science Classes

When the device arrived it was on. On unpacking the product I found that on entering a simple computation the result always remained zero. I shut the calculator down and was unable to turn it on again. Upon reading about the battery I opened the calculator and found that the battery was swollen and corroded.I replaced the battery and found that sometimes the calculator would function sometimes it would not. I took out the new battery and threw the calculator away.I am homebound and getting the device to one of the return sites would cost more than the calculator cost. I could have had it pickup up but between the cost of the battery and paying for the pickup, it was not worth the effort. DO NOT BUY AN HP 10s, I believe they have been discontinued while the remaining stock continues to age on the shelf.