


Does this calculator contain a lithium battery? If so, was it safe to open up the back of the calculator to find out?
The only thing I did was unscrew the back portion of this calculator to check and see if there is a lithium battery in it; I did not wear any safety goggles, gloves, etc. because it didn’t seem necessary to do so. The calculator was (I believe) off because it doesn’t seem to work whatsoever, it runs on solar power and didn’t turn on at all, even exposed to bright light. My main questions are if it contains a lithium battery, if it was safe to open up the back (without any safety equipment), and how to dispose of it if it does contain a lithium battery.