4680 Battery Cell Performance

[evphile]

Obviously, the 4680 battery cells being delivered in some Model Y’s are brand-spanking new, but does anyone know how they are performing?

- Is the promised superior performance (battery density, range, etc.) being delivered?
- Is TESLA making Model Y’s that get the
same or better range with fewer kWh???

- Could the 4680 battery architecture actually deliver 1,000,000mi battery life/performance?

- Do the 4680 promote/support rapid charging any better than the 2170 battery cells?

- Are the 4680 batteries safer than the 2170’s? Has anyone heard about any fires or other safety related incidents with any Model Y’s with 4680’s?

- How does the structural battery pack hold up in a car crash? Have we seen any Model Y’s with 4680’s in any car crashes yet? Is there any NHTSA “test dummy” crash video stock footage of a Model Y with 4680’s being crash tested?

 

[Ctuna]

Gruber Motors does repairs on the packs up to the 4680 and claims success.
If you follow him online the method is to bypass the offending cell as one cell
will bring the whole pack or module down. The 4680 pack is at least replacable as evidenced by the Munro teardown. If they can make these packs cheap enough
maybe it isn't as much of an issue. Panasonic had promised a 20 percent improvement in the 2170's over 5 years a couple years ago one of which has
already happened. So some hope of increasing the range of the existing 2170
fleet , but by then you will have battery's with twice the range as now. See CATL's
recent announcement.

 

[ucmndd]

Gruber Motors does repairs on the packs up to the 4680 and claims success.

They claim all sorts of things. Just don’t ask for evidence. People who actually know what they’re doing state emphatically that bypassing a cell just hastens the failure of the entire pack. It doesn’t work. Full stop.

 

[tangible1]

Gruber Motors does repairs on the packs up to the 4680 and claims success.
If you follow him online the method is to bypass the offending cell as one cell
will bring the whole pack or module down. The 4680 pack is at least replacable as evidenced by the Munro teardown. If they can make these packs cheap enough
maybe it isn't as much of an issue. Panasonic had promised a 20 percent improvement in the 2170's over 5 years a couple years ago one of which has
already happened. So some hope of increasing the range of the existing 2170
fleet , but by then you will have battery's with twice the range as now. See CATL's
recent announcement.

old packs, yes.
the 4680 pack, NFW.

All you have to see is the Munro 4680 teardown videos to realize individual, or even cell block repair, is not viable.
the only stuff repairable are the boards in the High Hat (ie power control / disatrib boards), and the cooling fluid I./O lines.
The rest is intended for wholesale recycling, planned at Redwood Materials (JB Straubel, former Tesla VP and now BoD member).

 

[jsight]

old packs, yes.
the 4680 pack, NFW.

All you have to see is the Munro 4680 teardown videos to realize individual, or even cell block repair, is not viable.
the only stuff repairable are the boards in the High Hat (ie power control / disatrib boards), and the cooling fluid I./O lines.
The rest is intended for wholesale recycling, planned at Redwood Materials (JB Straubel, former Tesla VP and now BoD member).

As pointed out in that Gruber/Munro video, the remove a cell electrically method is still physically possible.

It is controversial in all cases though, and frankly probably a bad idea overall.