Tesla model 3 now available
- Thread starter motorbiking
- Start date
Sponsored Links
- Joined
- 31 May 2016
- Messages
- 14,611
- Reaction score
- 2,188
- Country
You get an 8 year warranty, so not sure why you'd want to treat it any different.
In a word, degradation
Batteries degrade, the rate of degradation is affected by the temperature of the battery, hard driving and/or fast charging raise the temperature of the battery which accelerates the degradation.
Does the 8 year warrantee include free replacement of a battery degraded to 80% of capacity when new,
Two extracts from this ARTICLE
"" In the EV world it is generally considered that when a battery reaches 80% of its original capacity it is no good for use, so in a 40kWh pack, this would be degradation to 32kwh of capacity. ""
"" Many EV’s including the 2019 65kWh version of the Leaf are coming to the market with active liquid cooling, sometimes this even uses the vehicles A/C refrigeration system to achieve subcooling of the battery. This ensures that even when the ambient temperatures are very high the battery temperature can be maintained at its optimum level below the ambient temperature. Obviously, this comes at a cost of a more complex system and the energy required to operate the refrigeration and cooling systems. ""
- Joined
- 31 May 2016
- Messages
- 14,611
- Reaction score
- 2,188
- Country
Tesla Warranty replaces at <70%. It isn't true that a battery at 80% is no-longer fit. The article author fails to grasp that there are for example 8,256, 18650 battery cells across 16 modules making up the battery pack, in a 100 kWh Tesla. A single cell may be dead at below 80%, but that's not normally how these packs fail. Normally its total cell failure within the pack, which due to the charging and monitoring system means the cell is excluded.
Obviously smaller packs are less tolerant to this degradation. Is it really any different to a Petrol or Diesel car losing 20% of its claimed BHP after 5 or 6 years?
Obviously smaller packs are less tolerant to this degradation. Is it really any different to a Petrol or Diesel car losing 20% of its claimed BHP after 5 or 6 years?
Sponsored Links
If the battery is 8,256 cells connected as 16 serial strings of 256 cells then total failure of just one cell ( open circuit ) will result in loss of one sixteenth ( 6.25% ) of the battery's capacity as the entire series string will be unavailable.
That said a typical battery is in the order of 300 volts would have series strings of 80 cells ( 80 cells at 3.7 volts per cell = 296 volts )
Yes because range between charges is also reduced.
That said a typical battery is in the order of 300 volts would have series strings of 80 cells ( 80 cells at 3.7 volts per cell = 296 volts )
Yes because range between charges is also reduced.
Battery life is a common concern. Tesla's have always had liquid cooling and based on cars that have done huge distances they don't degrade very fast.
For model S the rate of loss is about 10% over the first 250,000 KM. Model 3s haven't been around long enough yet to tell but they have even more cooling power for their batteries.
https://steinbuch.wordpress.com/2015/01/24/tesla-model-s-battery-degradation-data/
It's one of my biggest niggles with the Nissan leaf, they have a van version that's had liquid cooling of a sort for ages but refused to put it into the Leaf version.
For model S the rate of loss is about 10% over the first 250,000 KM. Model 3s haven't been around long enough yet to tell but they have even more cooling power for their batteries.
https://steinbuch.wordpress.com/2015/01/24/tesla-model-s-battery-degradation-data/
It's one of my biggest niggles with the Nissan leaf, they have a van version that's had liquid cooling of a sort for ages but refused to put it into the Leaf version.
Similar threads
