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New Tesla Model Y structural 4680 cell pack spells the end of cheap electric car battery repairs

Model Y's 4680 battery proved a hard pack to crack (image: Munro Live/YouTube)
Model Y's 4680 battery proved a hard pack to crack (image: Munro Live/YouTube)
The new cell-to-chassis EV battery packs will make fixing a bad unit a replacement rather than repair game. Repairability of the new Model Y 4680 structural battery pack is 'essentially zero,' according to Cory from Munro & Associates whose teams took two days just to get into the battery.

Recently, Tesla started churning out Model Y vehicles with a structural battery pack made entirely of the new 4680 cells that offer much higher capacity than the older batteries it uses. The cell-to-pack technology seals the 4680 cells directly inside the battery housing that is an integral part of the vehicle's chassis, saving space and weight in the process.

The bad news is that the Model Y's structural battery pack is impossible to open and repair down to the single 4680 battery cells as many independent shops have been doing with the batteries of electric or hybrid cars for a good while now. This way they could only replace bad battery units, instead of going to Tesla and buying a new and very expensive pack as is the EV maker's modus operandi when it comes to battery repairs.

This fun time of cheap electric car battery repairs may be coming to an end once the 4680 structural battery packs start rolling out en masse, reports the crafty disassembly team of Munro & Associates. After trying for a while to crack open a Model Y 4680 battery pack, they ultimately succeeded only to find copious amount of tough pink polyurethane gluing everything together in one very hard to damage, but also to repair, form.

"The repairability of this [Model Y 4680 battery pack] is essentially zero," quipped Cory from Munro & Associates, as it took his experienced team two days to simply access the inside of the battery which Tesla showed a cutout of during the Texas Cyber Rodeo. While every EV battery repair involves precautions necessitated by the high voltage of the packs, the delay here was also due to the fact that the new EV battery cell-to-chassis designs are an integral part of the vehicle's body structure.

While removing the battery was fairly easy for Cory's team, despite the 143 steps it involves in Tesla's service manual, opening the structural pack proved much harder, while reaching an individual 4680 cell floating in a sea of hard polyurethane was near impossible. This may also sound like a recipe for a recyclability disaster, yet Elon Musk clarified in a tweet that recycling Tesla's new structural 4680 battery packs won't be an issue.

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2022 07 > New Tesla Model Y structural 4680 cell pack spells the end of cheap electric car battery repairs
Daniel Zlatev, 2022-07-14 (Update: 2022-07-19)