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AukeHoekstra
@AukeHoekstra
The increasing life expectancy of batteries is the main driver behind the rise of V2G: they far outlast the car anyway.
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Phil Roberts ๐Ÿ”‹โ˜€๏ธ๐Ÿ”Œ
@philroberts
So thatโ€™s the end of the โ€˜how long do the batteries lastโ€™ argument CATL to give 10 year - 600,000 mile battery warranty to 85% of capacity So not that they will only last 600,000 miles, they will have at least 85% of capacity at 600k miles Life expectancy is at least 16 years
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David Watson ๐Ÿฅ‘
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CuraCars
@curacars
Same for home batteries, the prices in China are now below 100 usd / kwh and 8000 cycles. Which would mean storing a 1kwh would cost maybe 0.012 cent. If "salderingsregeling" still exists or not, that less than the taxes you wont have to pay.
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Omar Cheema
@Vivantive
The warranty won't cover degradation by the vehicle, other system components of the vechicle You also have to prove it worked according to recommended BMS performance conditons at all times Practical warranty enforcement is not always easy
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Ben Feddersen
@SnoozeButtonBen
By far the biggest contribution to longer battery lifetimes is a vastly better understanding of how to operate them. Thermal management and SoC window optimization are huge, in ways that early EVs (the Leaf especially) simply did not understand.
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Till Maessen
@tillmatthis
Interestingly Jeff Dahn says NCM / high nickel type is almost more suitable for VG. He says using the battery only between 45-85% state of charge has practically no effect on expected life / capacity. So all teslas could do it in this window even now! *according to him
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JonM (archive)
@MorrisJonathan
My guess is that manufacturers would worry that if they went first, their models would gain a reputation for having knackered batteries. A fair concern I suppose, so you would need some sort of system to monitor how much a battery has been used for second hand sale purposes?
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Bruce Cooke
@BruceCooke8
I was surprised a while ago to hear that using your car battery as a house battery can be tougher on the battery. It's going through a cycle every day instead of possibly weekly
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Christian Mahler
@ChristianMahler
I'd say the main driver is the rise of renewables, solar capacity expansion far outpaces storage expansion (due to costs), which even leads to big problems bc the grid is flooded with cheap solar power at times. there were already some large scale v2g pilot projects in china.
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H.E. Green
@GrnEnergyBoost
I'm excited to see battery tech advancing so quickly. A 10-year warranty is a game-changer. Can't wait to see the impact on EV adoption and the environment.
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David Wilson
@duuuuuug
I fear the problem with V2G acceptance and implementation is a confected political problem rather than a technical or practical one. We shouldn't ignore this growing and widely distributed mini-BESS resource as a means to further grid capture of the midday solar energy surplus.
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Tim A
@pandemik0
Batteries will last so long that the rest of the car will rot around them. The chassis is the nee wear item, It'll be corrosion, seals/gaskets, fatigue and damage that will be failure causes, not battery degradation. Need to build rest of car differently.
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Geert van den Berg
@GRTXYZQ
I was looking at the affordable Tesla Model 3โ€™s. A car from 2019 with low mileage 42k KM. Battery report: a shocking 88% I much prefer the Nio idea of swappable batteries. Not to constantly swap them. You can still charge normally but youโ€™re just not stuck with an old battery.
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AukeHoekstra
@AukeHoekstra
They are called "combustion engines" for a reason๐Ÿ˜‰. That's why they "combust". It's great that we move to batteries because they burn a lot less and slower (although also longer and hotter). But no reason to be complacent: we should be able to eradicate battery fires.
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