= battery can be crafted with the following recipes

Skill used: fabrication
Required skills: electronics(1)
Difficulty: 2
Time to complete: 5 minutes
Tools required:
> 1 tool with screw driving quality of 1
Components required:
> 1x lemon OR 1x orange OR 1x grapefruit OR 1x concentrated acid OR 2x vinegar
> 1x chunk of steel OR 1x butter knife OR 1x steak knife OR 1x steel crossbow bolt OR 1x scrap metal
> 1x aluminum can OR 1x tin can OR 1x empty canister
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This recipe can be found in the following books when fabrication is at least the required level:
What's a Transistor? (level 1)
Ham Radio Illustrated (level 1)
AAA Guide 2040 (level 2)