Casio fx-9860G SD User Manual page 65

k k k k k Low Battery Message
If either of the following messages appears on the display, immediately turn off the calculator
and replace main batteries as instructed.
If you continue using the calculator without replacing main batteries, power will automatically
turn off to protect memory contents. Once this happens, you will not be able to turn power
back on, and there is the danger that memory contents will be corrupted or lost entirely.
# You will not be able to perform data
communications operations after the low
battery message appears.
1-9-2
When you keep having problems...
20050401