18650 Battery Pack for Tesla Model Y 1st Gen (2020–2021)

1. Product Overview

This product is a high-performance 18650 cylindrical NCA (Nickel Cobalt Aluminum) ternary lithium-ion battery pack, exclusively designed for the first-generation Tesla Model Y (2020–2021). It features a 75 kWh usable capacity (gross 82 kWh), serving as the original long-range power source for the Model Y Long Range and Performance variants. Manufactured by Panasonic, this battery pack integrates thousands of high-density 18650 NCA cells, paired with Tesla's sophisticated Battery Management System (BMS) and integrated liquid thermal management. Engineered for the Model Y's compact SUV platform, it delivers exceptional energy density, stable power output, and long-term durability, enabling the vehicle's impressive all-electric range and dual-motor all-wheel-drive performance.

2. Key Features

High-Energy NCA Chemistry: Utilizes Nickel-Cobalt-Aluminum (NCA) ternary cathode material, providing an industry-leading pack-level energy density of approximately 250 Wh/kg for maximum driving range.

18650 Cylindrical Cell Format: Robust, mass-produced cylindrical cells (18mm diameter × 65mm length) offering consistent quality, high power discharge efficiency, and proven reliability.

Optimized 75 kWh Capacity: Single high-capacity variant (usable 75 kWh) specifically engineered for the 2020–2021 Model Y Long Range & Performance, balancing range and weight.

High-Voltage Platform: Nominal pack voltage of 350V (347.8V typical), optimized for efficient power delivery to dual electric motors.

Advanced Liquid Thermal Management: Active liquid cooling and heating system maintains optimal cell temperature (20–45°C), ensuring performance in extreme climates and extending cycle life.

Precision Battery Management System (BMS): Real-time monitoring of individual cell voltage, current, and temperature, ensuring balanced charging, superior safety, and maximum pack longevity.

OEM Compatibility & Fit: Direct original equipment (OE) replacement for 2020–2021 Model Y, guaranteeing perfect fit, electrical compatibility, and performance matching.

Long Cycle Life: Designed to retain over 80% of its original capacity after more than 1,500 full charge-discharge cycles.

Supercharging Capable: Supports Tesla's V3 Supercharging (up to 250kW) for rapid DC fast charging.

3. Specifications

General Pack Specifications

Product Name: 18650 Cylindrical NCA Ternary Lithium Battery Pack for Tesla Model Y (1st Gen, 2020–2021)

Chemistry: Lithium-ion, NCA (Nickel Cobalt Aluminum Oxide) Ternary

Cell Format: 18650 Cylindrical (18mm Ø × 65mm L)

Nominal Pack Voltage: 350V (Typical: 347.8V)

Nominal Capacity: 75 kWh (Usable) / 82 kWh (Gross)

Ah Rating: 214.29 Ah (75 kWh @ 350V)

Configuration: Series-parallel array of thousands of individual 18650 cells

Approximate Pack Weight: ~480 kg

Operating Temperature:

Discharge: -20°C to 60°C

Charging: 0°C to 45°C

Cycle Life: >1,500 cycles (to 80% capacity retention)

Manufacturer: Panasonic

Warranty: 8 years or 192,000 km (whichever comes first)特斯拉中国

Cell-Level Specifications (Typical)

Single Cell Nominal Voltage: 3.6V

Single Cell Full Charge Voltage: 4.2V

Single Cell Capacity: 3.1 Ah (3100 mAh)

Max. Charge Rate: 0.5C (Standard) / 1C (Fast)

Max. Discharge Rate: 2C (Continuous) / 3C (Peak)

Charging Protocol: CC/CV (Constant Current / Constant Voltage)