Bats are small and passive flying creatures found in dark cavernous areas. Their purpose is almost entirely ambient-based and they do not have many practical uses.
Bats will spawn if the light levels are lower than 3 and they are below “Y” level 63. While they are quite small and only take up one block of space, they require at least two blocks of air to spawn. Bats will only spawn in the Overworld. In the Java edition of Minecraft, you can see bats spawning in groups of 8. However, the Bedrock edition of Minecraft only allows for a group of 2 to spawn.
Bats do not drop any items or experience orbs upon death. There is no reason to kill bats unless their constant squeaking bothers you.
Bats are mostly for the ambient effect in Minecraft and you can see them squeaking randomly as they fly around. They can also be seen hanging upside down on the underside of blocks. A bat’s collision box does not affect the player or any other Redstone components, which can make it difficult to find a practical use for a bat in your world.
While bats may not seem like the most impressive mob in the game, they can provide the player with immersive sound design. Their appearance during cave dives can be shocking and makes exploring the unexplored much more exciting.