why do batteries start working again if I roll them or turn the device off and on?
A little bit of corrosion can build up between the contacts and the battery preventing electricity from moving through. Spinning or scratching them removes the corrosion and you get a fresh contact area and it starts working again.
The Short Answer
A little bit of corrosion can build up between the contacts and the battery preventing electricity from moving through. Spinning or scratching them removes the corrosion and you get a fresh contact area and it starts working again.
Analysis
Key Concepts: Corrosion, little, build
This explanation focuses on corrosion, little, build and spans 38 words across 2 sentences. At 44% below the average Space & Astronomy explanation (68 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.
What This Answer Covers
This is a focused, single-point answer that gets directly to the core of the question without detours.
How This Compares in Space & Astronomy
Ranked #347 of 500 Space & Astronomy questions by answer depth (top 70%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.
Frequently Asked Questions
Is there a simple explanation for why batteries start working again if i roll them or turn the device off and on?
A little bit of corrosion can build up between the contacts and the battery preventing electricity from moving through. Spinning or scratching them removes the corrosion and you get a fresh contact area and it starts working again.
How detailed is this explanation compared to similar Space & Astronomy questions?
This is a focused answer at 38 words, ranked #347 of 500 Space & Astronomy questions by depth. The key concepts covered are corrosion, little, build.
What approach does this answer take to explain batteries start working again if i roll them or turn the dev?
The explanation uses direct explanation across 38 words. It is categorized under Space & Astronomy and addresses the question through 1 analytical lens.