Why has the Mars Rover Opportunity’s Lithium Ion Battery Lasted 11+ Years and the one in My Cell Phone/Laptop/Tablet Dies in Less Than 2?
NASA requirements lean toward the 'overengineered' side (for good reason – if something goes wrong you can't replace it). The battery in your phone is more from the "make it cheaper, they can always buy another battery" school of engineering. (Just to clarify, I am not being cynical about phone/l…
The Short Answer
NASA requirements lean toward the 'overengineered' side (for good reason – if something goes wrong you can't replace it). The battery in your phone is more from the "make it cheaper, they can always buy another battery" school of engineering. (Just to clarify, I am not being cynical about phone/laptop batteries. Most people – me included – would rather not pay something like 100 times as much for a battery that is able to withstand operating on Mars and lasts several times longer.)
Analysis
Key Concepts: Battery, phone, times
This explanation focuses on battery, phone, times and spans 83 words across 4 sentences. The depth is typical for Technology questions (category average: 75 words), striking a balance between accessibility and completeness.
What This Answer Covers
The explanation opens with: “NASA requirements lean toward the 'overengineered' side (for good reason – if something goes wrong you can't replace it)” It then elaboratesultimately building toward a complete picture across 4 connected points.
How This Compares in Technology
Ranked #190 of 500 Technology questions by answer depth (top 39%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.
Frequently Asked Questions
Is there a simple explanation for why the mars rover opportunity's lithium ion battery lasted 11+ years and the one in my cell phone/laptop/tablet dies in less than 2?
NASA requirements lean toward the 'overengineered' side (for good reason – if something goes wrong you can't replace it). The battery in your phone is more from the "make it cheaper, they can always buy another battery" school of engineering. (Just…
How detailed is this explanation compared to similar Technology questions?
This is an above-average answer at 83 words, ranked #190 of 500 Technology questions by depth. The key concepts covered are battery, phone, times.
What approach does this answer take to explain the mars rover opportunity's lithium ion battery lasted 11+ ?
The explanation uses root cause analysis across 83 words. It is categorized under Technology and addresses the question through 1 analytical lens.