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Vegetables and Fruit Battery
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scienceguy67
- Posts: 8
- Joined: Thu Jan 08, 2026 8:00 am
- Occupation: Student
Vegetables and Fruit Battery
What causes fruits and vegetables to power a battery. 
Moderator note: Project: https://www.sciencebuddies.org/science- ... to-battery
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calixte
- Student Expert
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- Joined: Tue Oct 01, 2024 9:42 pm
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Re: Vegetables and Fruit Battery
Hi!
Fruits and vegetables can “power” a battery because they’re wet and full of ions (salts/acids), so they work like an electrolyte (a liquid that lets charges move).
When you stick two different metals in (like zinc and copper), a chemical reaction happens at the metals. That reaction pushes electrons through the wire, which makes electricity. The fruit/veggie mostly helps by letting ions move inside to complete the circuit.
Fruits and vegetables can “power” a battery because they’re wet and full of ions (salts/acids), so they work like an electrolyte (a liquid that lets charges move).
When you stick two different metals in (like zinc and copper), a chemical reaction happens at the metals. That reaction pushes electrons through the wire, which makes electricity. The fruit/veggie mostly helps by letting ions move inside to complete the circuit.

