|Item Type||Quest Item|
|Crafting||This item cannot be crafted.|
- Not to be confused with 9V Battery.
The Battery is one of the items Piotrek needs to complete his spaceship.
In Alpha 6.0, the Battery was removed from the Broken Tractor it resided in, rendering Piotrek's quest impossible to complete. Later, in Alpha 7.1, the item was added back into the game as loot from a tank at a Tank Wreck, finally restoring Piotrek's quest.
The item, like all of Piotrek's spaceship quest items, can be shown to Wolfman, who has a twisted surprise up his sleeve for Piotrek.
Piotrek claims it should function as a "hybrid rocket engine".