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Posted

A commonly held perception about lithium-ion batteries used in electric vehicles and hybrids may not be true according to a Stanford University study that shows the batteries lasting longer than earlier lab tests had shown.

In a paper published on December 9th, researchers from the SLAC-Stanford Battery Center and the SLAC National Accelerator Laboratory monitored differences in battery health when the batteries were subjected to two types of battery charge and discharge cycled. 

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The most commonly used method of lab testing batteries involves charging and discharging the batteries using a constant current. Another more involved test, called Dynamic Cycling, mimics real-world activity more closely with surges in use followed by rest and regeneration cycles. 

The researchers found that the batteries subjected to the dynamic cycle test fared better in in health metrics such as the degradation of electrodes and lithium.

The team tested four charge-discharge patterns to 92 sample batteries over two years and found that the closer to real world use the pattern was, the better the health results of the battery at the end of the test with up to a 40 percent improvement over the standard test.

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The results were unexpected because the researchers thought rapid changes in charge-discharge in the dynamic cycling test would cause faster degradation of the battery components. 

Fear of expensive battery replacement costs had impacted the adoption of electric vehicles despite the likelihood that they will last 12 years or more.


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Posted

This is awesome news showing that the R&D into EVs is far stronger and better than ICE supporters have stated. 12yrs for a battery pack is on par with the life of an ICE engine. 

That stated, it would imply to me that like any auto, ice or EV, if taken care of they will last a much longer time than many expect.

  • Agree 1
Posted
1 minute ago, G. David Felt said:

This is awesome news showing that the R&D into EVs is far stronger and better than ICE supporters have stated. 12yrs for a battery pack is on par with the life of an ICE engine. 

That stated, it would imply to me that like any auto, ice or EV, if taken care of they will last a much longer time than many expect.

Even though some degradation is expected, with ranges as high as they are getting these days, it's not really going to affect your day-to-day life if you're charging at home each night. A newer EV with a 320 mile range from the factory will still get 265 miles of range if the battery degrades to 80% after 12 years.  That's still a longer range than some base model Tesla Model-3s

  • Agree 2
Posted
On 1/2/2025 at 6:19 PM, Drew Dowdell said:

Even though some degradation is expected, with ranges as high as they are getting these days, it's not really going to affect your day-to-day life if you're charging at home each night. A newer EV with a 320 mile range from the factory will still get 265 miles of range if the battery degrades to 80% after 12 years.  That's still a longer range than some base model Tesla Model-3s

I am really thinking an EV might be my next car.

  • Oh Yeah! 1
Posted
3 hours ago, A Horse With No Name said:

I am really thinking an EV might be my next car.

The testing of all the new production Solid State battery lines is showing that the next generation of EV batteries should last two plus decades with 372 miles to 621 miles of range. Honda Solid state battery is rated at 750 km which is 466 miles and LG / Samsung has stated that their solid state battery will come in a wide range of sizes from 600 km to 1000 km so at this point, if you have a battery pack good for 621 miles of range or 1000 km, that is pretty much a solid day of road trip with charging at DC that evening or a level 2 over night at the hotel. Pretty much makes range anxiety a thing of the past.

Course I am consistently averaging 300 to 320 miles of range on my EV9 and as @Drew Dowdell pointed out even after 12 years on the high side at 265 miles, plenty for local driving.

I feel this is no different than the drop off in performance from an ICE auto in regard to HP/Torque except that EVs tend to not lose the HP/Torque like an ICE auto does while consuming more gas. Instead, you're just looking at battery degradation.

Good read on EV Motors: Electric Vehicle Motor Lifespan: How Long Does It Last? — PRIMECOMTECH

Pretty much, EVs I feel will outlast ICE autos.

  • Agree 1
Posted
6 minutes ago, G. David Felt said:

The testing of all the new production Solid State battery lines is showing that the next generation of EV batteries should last two plus decades with 372 miles to 621 miles of range. Honda Solid state battery is rated at 750 km which is 466 miles and LG / Samsung has stated that their solid state battery will come in a wide range of sizes from 600 km to 1000 km so at this point, if you have a battery pack good for 621 miles of range or 1000 km, that is pretty much a solid day of road trip with charging at DC that evening or a level 2 over night at the hotel. Pretty much makes range anxiety a thing of the past.

Course I am consistently averaging 300 to 320 miles of range on my EV9 and as @Drew Dowdell pointed out even after 12 years on the high side at 265 miles, plenty for local driving.

I feel this is no different than the drop off in performance from an ICE auto in regard to HP/Torque except that EVs tend to not lose the HP/Torque like an ICE auto does while consuming more gas. Instead, you're just looking at battery degradation.

Good read on EV Motors: Electric Vehicle Motor Lifespan: How Long Does It Last? — PRIMECOMTECH

Pretty much, EVs I feel will outlast ICE autos.

See my post in Random Thoughts, the complexity of modern ICE vehicles will create major problems for them moving forward.

  • Agree 1
Posted
1 hour ago, A Horse With No Name said:

See my post in Random Thoughts, the complexity of modern ICE vehicles will create major problems for them moving forward.

This goes for the Toyota Hydrogen is better than EV approach, such a complex high compression engine solution that I cannot see it being better than an EV.

  • Agree 1
Posted
2 hours ago, G. David Felt said:

This goes for the Toyota Hydrogen is better than EV approach, such a complex high compression engine solution that I cannot see it being better than an EV.

Of all of the bad automotive ideas, this ranks near the top.

  • Agree 1

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