[Unanswered]  What batteries does Ignition use?

Also is there a tutorial or could someone walk me through what to do with the battery changing tool? I assume you use it once you unscrew the bottom. Unfortunately, I can’t remember where I put the manual. Help is much appreciated!
Shindog should be able to help you.
This video should help you.

https://youtu.be/MdWDjoW-u9U