Tesla charge taper vs others - is there trouble ahead?

[thegruf]

More and more articles are showing that Tesla has a more agreesive taper than other manufacturers and this is starting to reduce Tesla's 5-7 year claimed lead.
Bjorn Nyland recently placed the Audi ETron GT at the top of his 1000Km challenge for example.
Essentially the Audi claimed the win due to faster charging.

So, is this because Tesla have been caught using the "wrong" battery chemistry, wrong as in other chemistries have leapfrogged Tesla in this regard and can cope with a less aggressive taper?

Or, is this Tesla using signifiantly cheaper chemistry in order to save cost, which is necessary for them to compete with established big auto?

Or, are other manufacturers being forced to push the envelope to compete with Tesla and by overly aggresively charging their batterie,s they are storing up future problems for themselves with cell degradation for the future, eg as Tesla have already found by having to cut the maximum cell voltage on older bateries?

 

[SO16]

More and more articles are showing that Tesla has a more agreesive taper than other manufacturers and this is starting to reduce Tesla's 5-7 year claimed lead.
Bjorn Nyland recently placed the Audi ETron GT at the top of his 1000Km challenge for example.
Essentially the Audi claimed the win due to faster charging.

So, is this because Tesla have been caught using the "wrong" battery chemistry, wrong as in other chemistries have leapfrogged Tesla in this regard and can cope with a less aggressive taper?

Or, is this Tesla using signifiantly cheaper chemistry in order to save cost, which is necessary for them to compete with established big auto?

Or, are other manufacturers being forced to push the envelope to compete with Tesla and by overly aggresively charging their batterie,s they are storing up future problems for themselves with cell degradation for the future, eg as Tesla have already found by having to cut the maximum cell voltage on older bateries?

Perhaps just concerns about fragging of the battery in the long term. Will be interesting to see how other manufacturers’ batteries hold up.

 

[gearchruncher]

Perhaps just concerns about fragging of the battery in the long term. Will be interesting to see how other manufacturers’ batteries hold up.

Other manufacturers tend to put much more overhead in their packs than Tesla. It's one of the reasons they charge faster- you are never as close to 0% or 100% in the actual cells as you are in a Tesla, and they can keep their rated range even with some battery degradation.

 

[gowthamn]

What about voltage? Other manufacturers use 800 volts.

 

[rypalmer]

What about voltage? Other manufacturers use 800 volts.

Overall battery voltage has nothing to do with it.

 

[Yoliber]

IIRC 800 V reduces the amount of heat/current which may help.

 

[rypalmer]

IIRC 800 V reduces the amount of heat/current which may help.

I believe this is false. What matters is the C rate of the individual cell. The cell itself only operates within the voltage range and thus amperage relative to its state of charge, eg 2.8-4.2V. The only place an 800V architecture saves on heat is in the high voltage components that comprise the overall system, such as busbars, wiring to the charge port, charge port to fast charger, inverter, motor, etc. Tesla is not tapering based on those components, except in extreme circumstances.

 

[bryan995]

#3. That is all.