Extended Battery Gone?

[ElectricShitbox]

205 seems fine

 

[smack daddy]

It’s funny the continued negative insistence on longer range. This truck (for now) is not designed for daily highway trips. If that math is your primary concern, you may also need to plan for 4 doors, because the design of this vehicle clearly demonstrates its purpose. It’s not meant for long trips and it’s not a family sedan. Those customers may truly need to look elsewhere.

When you live in the middle of nowhere but near every thing it works with range there aren’t that many chargers around here that work

 

[smack daddy]

205 seems fine

What is that a leaf

 

[ElectricShitbox]

What is that a leaf

Spark EV with some bad cells

 

[metroshot]

All lithium chemistry batteries degrade more at very high SOCs. LFP and NMC are not different in this regard. The "LFP gets more effective range because you can charge to 100% and you can't on NMC" narrative is FALSE, and has sprung out of two unrelated points:

1. The "NMC can't be above 80%" claim is overblown - no lithium chemistry battery should be charged to 100% and left there for a long period of time, but if you are driving every day then you are always bringing the SOC down. Even if you are trying to extend the life of your battery as much as possible and limiting charge to 80 or 90%, then just charge to 100% whenever you need the longer range. Its just fine, there isn't a magical hard limit at 80%, and you can access the full range any or every day if you need it.,,,,,,,

This is correct!

I have been driving EVs since 2018 and there's no harm in charging to 100% on NMC batteries - as long as you drive off immediately and not let it sit.

Always knowing the SOC buffer exists so you never really truly reach 100%.

Mine has about 7% SOC buffer which means even though I charge my NMC batteries to "100%", it's really 93%.

So why shortchange yourself even more by charging to 80% unless you plan on storing the car away for long periods of time.

I drive a lot and when I got to a Tesla Supercharger once a week, I charge it to 100% knowing that I will need the miles immediately after pulling out.

Battery engineers know that and have designed in these SOC buffers as well as intelligent charging BMS.

 

[Kopsis]

But as drivers, we have more needs than babying our batteries. Just charge to whatever you feel comfortable with.

Bingo! It's easy to get obsessive over battery care (especially if you've never owned an EV) but the reality is that the quantitative impact on battery longevity is relatively small. Optimize for your usage patterns if you know it won't limit you. But you'll have a warranty that says your battery will be at better than 70% SOH after 10 years no matter how badly you treat it. Some might even argue that operating with complete disregard for battery health so you can get a new one at the end of year-9 might be a smart play

 

[Supernintendo Chalmers]

I believe the battery buffer is smaller now. So I hope that means less dead weight to drag. But then LFP is heavier, so it’s a moot point. As a secondary vehicle, there is a higher chance this sits at a high soc for longer.

 

[Tom Sawyer]

This is correct!

I have been driving EVs since 2018 and there's no harm in charging to 100% on NMC batteries - as long as you drive off immediately and not let it sit.

Always knowing the SOC buffer exists so you never really truly reach 100%.

Mine has about 7% SOC buffer which means even though I charge my NMC batteries to "100%", it's really 93%.

So why shortchange yourself even more by charging to 80% unless you plan on storing the car away for long periods of time.

I drive a lot and when I got to a Tesla Supercharger once a week, I charge it to 100% knowing that I will need the miles immediately after pulling out.

Battery engineers know that and have designed in these SOC buffers as well as intelligent charging BMS.

I'm not convinced all EV manufacturers program a buffer in their batteries. Rather than go on speculation I'd rather a Slate engineer speak to their approach.