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The 70D actually has an electronically limited 75 kWh battery pack, meaning it's exactly the same car as the 75D with the exact same battery. The battery doesn't seem to degrade as quickly because you're never actually using 100% of the capacity.Lots of 75Ds behave like that. The S70D, which preceded your variant is a little bit better. At 4 years 232 of 240 miles, or 3.3% degradation. I've heard that frequent supercharging can be a factor. I'm guessing about 5-8% of my miles are from a supercharger. With Teslas, its a little bit like getting a box of chocolates. You never know what you are going to get.
No. The vast majority of 70s are “real” 70kwh packs (battery code BT70). Only a small handful of post-facelift 2016 models were software locked 75s (battery code BTX5).The 70D actually has an electronically limited 75 kWh battery pack, meaning it's exactly the same car as the 75D with the exact same battery. The battery doesn't seem to degrade as quickly because you're never actually using 100% of the capacity.
Wasn't aware of this. My mistake, sorry.No. The vast majority of 70s are “real” 70kwh packs (battery code BT70). Only a small handful of post-facelift 2016 models were software locked 75s (battery code BTX5).
Are you suggesting that this new chemistry is worse in terms of degradation?@WesB Several models made after late 2015 used a new chemistry employing silicon in the anode. Charged EVs | Tesla tweaks its battery chemistry: a closer look at silicon anode development
Lots of 75Ds behave like that. The S70D, which preceded your variant is a little bit better. At 4 years 232 of 240 miles, or 3.3% degradation. I've heard that frequent supercharging can be a factor. I'm guessing about 5-8% of my miles are from a supercharger. With Teslas, its a little bit like getting a box of chocolates. You never know what you are going to get.
Others have tapped into their car's CAN-bus to get millivolt readings of each battery pack. From what I recall, no individual cells go 'dead', but rather, each module slowly loses its capacity to store energy. The technical term for this degradation is 'dendrite formation'. I'm not a chemical engineer, but this article sums up what is happening.I assume that the lost mileage is never recoverable short of a new battery pack. Is this loss capacity due to dead cells?
MS85, 4 years + 4 months, 76'000 km (47'000 M).
Battery down by 2.8% (30% supercharging)