BYD Blade · Generation 1

BYD 7C

7C[1][8]

BYD Blade LFP cells in a structural pack for the Berlin-built Model Y RWD.

LFPBlade (prismatic)Structural packMay 2023 – 2024Community

Gross capacity: 55–60 kWh; disputed
Usable capacity: Unknown
Cells: Unknown
Pack mass: Unknown

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Pack · top view

Module layout unverified

Cell supplier: BYD (FinDreams Battery)
Cell: BYD Blade LFP
Vehicles: Model Y
Built at: Berlin

In July 2022 the Dutch authority RDW type-approved a Model Y variant internally called Y7CR, a rear-wheel-drive car with a BYD LFP structural pack, as reported from leaked approval documents. Production at Giga Berlin started in May 2023.

Capacity is disputed. The type-approval documents list 55 kWh, while electrive's independent measurement found about 60 kWh. Both values are shown and neither is marked as correct.

Specifications

Pack data, value by value

Manufacturer-confirmed
Documented
Community-reported
Estimated

Every value shows its evidence level and sources. “Unknown” means no source we trust has published it. We never fill gaps with assumptions.

Gross capacity: 2 reported valuesspread 5 kWh · 8.7%

Rings: reported values. Because the sources carry comparable evidence, none is shown as primary. Differences often come from different definitions of gross capacity.

Gross capacityTotal energy incl. bottom buffer: Disputed
Two documented values conflict.
Sources report different values. None is marked as correct:
55 kWh[1][2]EU type-approval documents.
60 kWh[3]Independent measurement by electrive.
Usable capacityEnergy available 100% → 0%: Unknown
Chemistry: LFPDocumented[1]
Cell format: bladeDocumented[2][4]
Cell supplier: BYD (FinDreams Battery)Documented[5][1]
Cell count: Unknown
ConfigurationSeries × parallel: Unknown
Modules: Unknown
Nominal voltage: Unknown
Architecture: Unknown
Pack mass: Unknown
Energy densityPack level: Unknown
Requires both pack mass and capacity.
Structural pack: YesDocumented[6][1]
Peak DC charging: 170 kWDocumented[3]

The cell

BYD Blade LFP

A long, thin LFP cell that spans the pack and doubles as a structural element.

Cell data

Dimensions: Unknown
Dimensions of the Blade cells supplied to Tesla have not been published.
Capacity: Unknown
Nominal voltage: Unknown
Energy per cell: Unknown
Chemistry: LFPDocumented[1]

Capacity in context

Gross capacity of every documented pack. Hatched bars are disputed ranges; packs with unknown capacity are omitted.

Applications

Where this pack is installed

Each row is a documented link between this pack and a vehicle variant, with its factory, period and evidence. A variant may also appear with other packs.

Model Y Open in finder

Variant	Period	Factory	Market	Code	Evidence
Rear-Wheel DriveModel Y (2020–2025)	May 2023 – 2024	Berlin	Europe	Y7CR	Documented[1][4][7]

Supply chain

BYD / FinDreams · plant not disclosedplant undisclosedGigafactory Berlin-BrandenburgcellsDocumented[5][4]

View on the global map

Performance

Charging, advantages and tradeoffs

Peak DC charging

170 kW

Documented[3]

No verified charging curve for this pack is in the database yet. Curves vary with temperature, state of charge and software, so we only publish curves backed by repeatable measurements.

Advantages

electrive reproducibly charged from 10 to 80% in under 20 minutes in cool conditions with preconditioning. [3]

Tradeoffs

Fast-charging performance depends heavily on preconditioning, as with other LFP packs. [3]

Identification

How to tell if your car has it

European cars: variant field (D.2) Y7CR on the registration certificate or COC.
Controls › Software › Additional Vehicle Information shows the LFP battery type.
The part number on the high-voltage battery label and Tesla service records are definitive. A VIN alone does not encode the cell supplier or pack code.

History

Lineage in the BYD Blade family

BYD's Blade-format LFP cells, used in a structural pack for the rear-wheel-drive Model Y built at Giga Berlin.

BYD 7C2023–2024 · Disputed

Jul 2022Documented[1]
EU approval for the BYD-powered Model Y
The Dutch RDW type-approves variant Y7CR, a rear-wheel-drive Model Y with a BYD LFP structural pack.
May 2023Documented[4]
BYD Blade Model Y enters production
Giga Berlin begins building the Model Y RWD with BYD Blade cells.

Related packs

CATL 6L vsCATL 6M vs

Sources

8 references

[1]
Tesla Model Y with BYD batteries has received EU approval, report says
CnEVPostpressPublished 12 Aug 2022Consulted 28 Oct 2026Pending direct review
Reports EU type-approval documents (RDW, 1 July 2022): Type 005, variant Y7CR, 55 kWh.
[2]
Tesla Model Y to get BYD Blade batteries in Europe
The DrivenpressPublished 15 Aug 2022Consulted 28 Oct 2026Pending direct review
[3]
What can the Tesla Model Y with BYD battery do?
electrive.compressPublished 1 Feb 2024Consulted 28 Oct 2026Pending direct review
[4]
Tesla started production of Model Y with BYD battery in German Gigafactory, according to a report
CarNewsChinapressPublished 4 May 2023Consulted 28 Oct 2026Pending direct review
[5]
Tesla starts utilising BYD batteries at Giga Berlin
electrive.compressPublished 11 Aug 2022Consulted 28 Oct 2026Pending direct review
[6]
Tesla Adds New Model Y Variant at Giga Berlin With BYD Structural Battery Packs
autoevolutionpressConsulted 28 Oct 2026Pending direct review
[7]
Used Tesla Model Y: Battery, Variants, SoH
AkkubriefdatabaseConsulted 28 Oct 2026Pending direct review
[8]
Quelles versions de batteries équipent les Tesla Model 3 et Y ?
Fiches-Auto.frpressConsulted 28 Oct 2026Pending direct review
Secondary table mapping pack codes to suppliers. States that its capacities are gross values.