-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
Wiki Sudden Loss Of Range With 2019.16.x Software
- Thread starter Dutchmeeuw
- Start date
Certainly I have seen this on many S / X cars while charging and some posts here have indicated similar after charging, but I can't believe the pumps would just keep running for hours / days / overnight with the car just sitting. I guess at high SoC's any charging at all could be set to turn on the pump. Seems somewhat undesireable.
According to the OP of the mentioned thread, the pack replacement was triggered by 2019.42.2.3 update and the "Maximum Charging Range Limited" message:
New 85kWH battery for my 2013 P85+
7104 cells - 16 modules of 74 parallel cells with 6 groups in series per module-so the 6 groups in each module are balanced as you see in all the bar graphs
Ferrycraigs
Member
Packs are made up that way
Cells are combined into Bricks. (roughly 65-85 Cells per Brick depending on battery size)
Bricks combine to make Modules. (Always 6 Bricks per Module)
Modules combine to make Packs. (Either 14 or 16 Modules per Pack depending on battery size)
In this case the battery has 16 Modules, each of 6 Bricks. Total of 96 Bricks, hence the 96 columns.
Each Module has 6 Bricks. Hence the grouping in 6s.
JRP3
Hyperactive Member
On two different occasions Elon has publicly stated that the stock price was "higher than we deserve". No one "all about his stock price payday" says that in public. Of course a higher share price benefits Tesla employees so in that sense I'm sure he'd prefer a higher than lower price.
Thanks for the input @Dave EV - I am working on getting it down to low SoC this week - not plugging at night - so I'll report back in a few days.
It's hard to believe but still happening. This was actually the first sign of 2019.16 caps in action. Before most people noticed the newly lowered limits there were threads asking why the pumps were running 24/7 suddenly. After the caps were noticed we thought it was used to get the battery below the cap so it wouldn't show 120% charge in the dash during your first capped drive... but it's still doing it almost a year later so there is another reason for the perpetual cooling.
islandbayy
Active Member
But they DID deliver a real 85kWh battery, BUT, it was labeled a 90kWh. The 90kWh packs were about 85.8 kWh. Which means that the replacement 87kWh battery, is actually closer to the 90kWh battery, than the actual 90kWh battery was.
And I need to disagree. a 400v pack will have a longer operating life than a 350v pack of the same chemistry. That 400v pack will need to push less amps through the cells, meaning less heat, more longevity.
eye.surgeon
Active Member
You're confusing what Elon says with how the company is run.
Keeping delivery centers open until midnight to jam as many sales into the reporting quarter no matter the utter chaos it creates and the bad impression it leaves with new owners is all about the stock price.
10 mV is good at high SOC. You usually see the biggest difference in voltages starting below 30% or so depending on how well matched your modules are in your pack. Ideally your module voltages would stay identical, meaning they are all exactly the same. Your pack is only as strong as your weakest module.
No, it purely comes down to cell count. More cells = less stress per cell. Pack voltage doesn't matter, though it does reduce current coming out of the pack and current through module bus-bars.
One benefit of a higher voltage pack is that the BMS has a slightly easier job keeping the modules balanced since each module has fewer cells. But this also means that if you have a weak or dead cell, it affects the module it's in more since there are fewer cells in parallel.
I don't doubt it. They make one chemistry and use it in as many cars as they can to increase profitability. Making one module type increases profitability again. They can make a batterygate recall replacement on the same battery production line as a new Performance Model S, the only difference is 2 modules fewer for savings. It's what they did on the standard and LR versions before the 100 pack came along.
If you do the math, the capacity of this new battery and the miles it achieves are correct for a 14 module fraction of the normal 100 kwh pack. This is how they've decided to handle the recalls on a mass assembly line they already have. Naturally decreasing S production numbers lately means they have some overhead without impacting sales too.
ucmndd
Well-Known Member
It's worth pointing out this new 85kwh battery, if it's architected the way we assume, actually has a few MORE cells than the original.
Original 85/90 kwh battery = 7104 cells
Original 100 kwh battery = 8,256 cells
"new" 85kwh battery (14/16 of a 100kwh battery) = 7,224 cells
No doubt that is part of it, but its also helping potential owners qualify for expiring federal and state incentives.
JRP3
Hyperactive Member
It's not. It's about delivering product to customers, many who have been waiting quite a while, and trying to meet company goals, which helps prove the business is viable. That can be reflected in the stock price but is not the goal in and of itself. The world we operate in requires quarterly reports, I'm quite sure Elon would avoid those and the end of Q rush if he could. One of the many reasons he considered going private, at a price far lower than where we are now.
Similar threads
