Quote:
Originally Posted by WarrenC12
I'm not sure what industry you are involved in, but batteries are designed for the specific use cases they will have. EV batteries are designed for longevity, temperature changes, discharge rates, and cell redundancy.
Each manufacturer does things differently of course, Tesla is regarded as one of the best due to the temperature management system, and the fact they use a ton of small cells to make up the battery. Individual cells can die with little to no overall impact on the pack.
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I have to agree with him. We were using lead acid for EV's almost as far back as the automobile itself and only really began testing prototype EV's with newer cell technology like Nickel Cadmium and Nickel metal Hydride when the technology became viable for cars in the late 90's and even then it was partly for why the EV1 (which until 1999 was STILL a lead acid battery EV) was so range limited, and extremely heavy.
Using ultra-high capacity lithium cells in a car is still quite new relative to both technologies. Yes they do provide a far better capacity than previous technologies and are both smaller and lighter but longetivity estimates will still vary in real-world applications and we still have not yet fully gotten good at dealing with the volatility of the cells (or reliably mass manufacturing them), not just in cars but in phones, laptops or just about anything that requires a high capacity lithium cell.
Assuming these batteries will remain useable or even replaceable in 15 to 20 years is pure speculation. I said a few pages back that it would be best to wait another 20 years before committing to an EV but for now there are more than enough ICE cars that can take you to that point, many of which yes, are even half the age of my car but still perform just as well if not better with regular maintenance.