Because of the chemistry of the cells in the 90kWh packs. (Especially the early ones.)
This. ^
You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Because of the chemistry of the cells in the 90kWh packs. (Especially the early ones.)
So Hoovies story got a sequel via the Rich Rebuilds channel. Apparently the Electrified garage changed the bricks that were of balance with closely matched bricks.
@wk057
you mentioned that this is not the preferred way of working/best solution. I am curious what the ownership experience of Hoovie will be with this repair done to the tesla.
How far out of balance does it need to be to trigger the shutdown? (We have seen a few people with a ~90mV, up to a 320mV, imbalance on new Plaid Model S vehicles where the SoC is wonky, charging stopping at ~90% and then jumping to ~100% overnight while not being charged, and rated miles being way lower than it should be. And they have yet to through any non-hidden warnings/errors. Thread here: "Balance Required" BMS Alert on Plaid)This type of "fix" always results in the BMS being like, "Nope!" as a result of the perpetual and uncorrectable imbalance.
How far out of balance does it need to be to trigger the shutdown? (We have seen a few people with a ~90mV, up to a 320mV, imbalance on new Plaid Model S vehicles where the SoC is wonky, charging stopping at ~90% and then jumping to ~100% overnight while not being charged, and rated miles being way lower than it should be. And they have yet to through any non-hidden warnings/errors. Thread here: "Balance Required" BMS Alert on Plaid)
No they are quoting 22k for a new pack with more capacity. The 11k is a reman pack.So they're quoting some people 11K and others 22K? That's nuts.
The bulk of issues in older packs are problems with electronics, cell sense leads, etc. Not actual cell issues. So Tesla can in fact refurbish a good percentage of the older packs, update their sense wire setup, etc.@wk057 I respect all of your work and knowledge with Teslas and batteries. I own a 2013 P85 that I bought new and still enjoy driving it, although it is out of warranty (and I am getting nervous when reading threads like this) . One thing I am confused about with respect to your statement above about the difficulty of swapping out modules to refurb a pack...I know that you've said that you have really tried to match up modules (same age, etc.) to refurb packs and have had issues.
Obviously Tesla is providing refurb packs for both in and out of warranty battery repairs and they take the "bad" packs back as part of the "core charge" process, so there has to be a way for them to refurb a pack that makes it usable and reliable again?. What do you think they are doing to refurb packs that make them usable and reliable again? It seems like there has to be something...It would be very bad PR if the truth was that they have to recycle or discard packs because one module has a problem...Thanks....
I think that's a reasonable stance, if there's reason to believe the repair is lasting and durable. Having an option like this to replace, say, a failed battery management board is a game changer.
Not suggesting this, but the repair might make your car resale value worth something to the uninformed. So they owner can pawn it off to another idiot we didn't do their homework. Personally, I think the only fix is to make battery replacement so cheap, that people don't think about it. Make the whole NEW pack cost $5K to replace and I'm sold Tesla has a solution to this problem. However given the wholesale price of 1KWh pack is still somewhere in $145 range, I seriously doubt we are anywhere near at $5K per pack given all the other stuff involved in building the pack in addition to the batteries itself.I think that's a reasonable stance, if there's reason to believe the repair is lasting and durable. Having an option like this to replace, say, a failed battery management board is a game changer.
But if you're charging someone $5-7k for a "repair" that has a high likelihood of failing again in the very near term, have you really helped them?
What is the size of the new battery pack vs. the remanufactured pack?No they are quoting 22k for a new pack with more capacity. The 11k is a reman pack.
I should have stated there are several tweets in that string. Worth reading for more detail on his viewpoint.I think that's a reasonable stance, if there's reason to believe the repair is lasting and durable. Having an option like this to replace, say, a failed battery management board is a game changer.
But if you're charging someone $5-7k for a "repair" that has a high likelihood of failing again in the very near term, have you really helped them?
I believe this is what caused my pack failure last Sept. I had several errors (BMS_f098_HW_BMB_Over, BMS_f017_SW_Brick, BMS_u018_Max_Charge, possibly others). I had charged the car to 70% and it was sitting plugged in when the problems started. SoC shown on the app was bouncing around a wide range, mainly 30%-100%, but occasionally showing 0%. By the time the tow truck showed up, the car had completely died and I needed to jump it.The bulk of issues in older packs are problems with electronics, cell sense leads, etc. Not actual cell issues. So Tesla can in fact refurbish a good percentage of the older packs, update their sense wire setup, etc.
They don't replace modules. I've personally opened 20+ refurb packs and the modules were always all original to the pack.
To add to this, I see people thinking this might be 75kwh battery pack but I don't think so.
1088815-01-x is absolutely, positively, a remanufactured 85kWh pack. Anyone who claims otherwise is just plain wrong. That's what was installed in my car when the original pack failed (see above).To add to this, I see people thinking this might be 75kwh battery pack but I don't think so.
The price does seem to be coming down over time, for both new and reman, and there does seem to be inconsistency in pricing from one customer to another.
Something is fishy with the whole Hoovie story. The $22k estimate they flash on the screen in the video has a date from 2019.