Using Alkaline Batteries - TALKCOM TC750 User Manual

Then push up the battery door to close
Warning:
Reversing the polarities of battery could damage the unit
and the battery.
If you're not going to use the unit for a long period of time
e.g several weeks, please take out the battery.
Please dispose of old and defective batteries in a safe &
environmentally friendly manner.
Do not dispose of batteries in a fire.
Use Alkaline batteries
You can use normal AAA size batteries with the optional AAA
battery case:
6