German scientists compared Tesla's 4680 battery cells with BYD's blade battery, and found that while both have their strengths and weaknesses, BYD's blade battery is more efficient, lighter, and smarter, but with some trade-offs, ultimately showing that each battery excels in different areas
Questions to inspire discussion
Battery Performance
🔋 Q: How does BYD's Blade battery compare to Tesla's 4680 cells in efficiency?
A: BYD's Blade battery is more efficient with lower internal resistance and less heat at high charging rates, allowing for faster charging and more range per charge compared to Tesla's 4680 cells.
⚡ Q: What are the charging capabilities of BYD's Blade battery?
A: BYD's Blade battery can charge at 1,000 kW and add 450 km of range in 5 minutes, significantly outperforming Tesla's 4680 cells with a top charging speed of 325-350 kW.
Battery Chemistry and Design
🧪 Q: What chemistry does BYD's Blade battery use, and how does it compare to Tesla's?
A: BYD's Blade battery uses lithium phosphate chemistry, which is cheaper to manufacture but less energy dense than Tesla's NMC 811 chemistry, yet offers lower internal resistance and less heat at high charging rates.
📐 Q: How does the design of BYD's Blade battery differ from Tesla's 4680 cells?
A: BYD's Blade battery features massive volume efficiency and folded electrodes, making it lighter and more efficient compared to Tesla's 4680 cells with their chunky cylinders and jelly roll style design.
Energy Density and Charging
🔬 Q: How do the energy densities of BYD's Blade battery and Tesla's 4680 cells compare?
A: Tesla's 4680 battery cells have higher energy density at 241 Wh/kg and 643 Wh/L, but are heavier and more expensive to manufacture than BYD's Blade battery.
🔌 Q: What advantage does BYD's Blade battery have in terms of charging capacity?
A: BYD's Blade battery can be charged to 100% regularly, unlike Tesla's 4680 battery cells which have lower energy density and higher internal resistance at high charging rates.
Key Insights
Battery Performance
🔋 BYD's Blade battery boasts higher efficiency with lower internal resistance, less heat generation, and smoother power delivery, crucial for fast charging and long-term battery health.
⚡ The Blade battery can charge at an impressive 1,000 kW, significantly outpacing Tesla's 325 kW charging speed, enabling quicker refueling for long-range driving.
Manufacturing and Design
💰 BYD's Blade battery is cheaper to manufacture, with a lower cost per kilowatt hour due to its lithium phosphate chemistry, which is less expensive than Tesla's NMC 811 chemistry.
📏 The Blade battery achieves higher volume efficiency through a more compact design using folded electrodes and graphite anodes, allowing for more cells in the same space.
Practical Considerations
⚖️ Despite having a lower energy density (160 Wh/kg vs Tesla's 241 Wh/kg), the Blade battery's ability to charge to 100% regularly mitigates this disadvantage in real-world usage.
🚗 The Blade battery's lighter weight improves vehicle acceleration and efficiency by using less passive materials like housing and bus bars.
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Clips
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00:00 🔋 German scientists dissect and compare Tesla's 4680 battery cells and BYD's blade battery, finding BYD's batteries to be more efficient, lighter, and smarter, but with some trade-offs.
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01:29 💡 BYD's blade battery, despite being heavier and less energy-dense, surprisingly wins on efficiency over Tesla's 4680 battery due to its lower internal resistance and unique design.
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02:56 💡 The new BYD Blade battery and Tesla 4680 have distinct designs, with BYD's bigger format reducing wasted space and Tesla relying on laser welding, unlike traditional ultrasonic methods.
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03:24 💡 BYD's Blade battery and Tesla's 4680 battery have similar manufacturing differences, but the Blade battery is likely cheaper and more efficient overall, while Tesla's battery offers higher energy density and more range per pound.
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04:49 💡 BYD's Blade battery efficiency can offset its lower range due to its ability to be charged to 100% regularly and smart usage.
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05:18 ⚡ BYD's blade battery outperforms Tesla's 4680 in fast charging, handling 1,000 kW and adding 450 km of range in 5 minutes, while Tesla's top charging speed is around 325-350 kW.
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06:26 💡 BYD's new battery platform, featuring lithium-ion phosphate batteries, outperforms Tesla's 4680 in terms of thermal management and charging speed, but Tesla's 4680 excels in performance and raw power.
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07:27 💡 BYD's new Blade battery leads in charging power, but Tesla wins in efficiency and range with its 4680 battery.
- BYD's lithium phosphate batteries are approximately $30 per kilowatt hour cheaper to manufacture than Tesla's, but Tesla's superior range with the same battery pack in the Model Y suggests an advantage.
- BYD's new Blade battery leads in charging power, but Tesla still wins in efficiency, extracting maximum range from its batteries.
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Duration: 0:9:47
Publication Date: 2025-03-23T14:29:24Z
WatchUrl:https://www.youtube.com/watch?v=acYYgX78ZGo
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