21700 Cylindrical NCA/NCM Battery for Tesla Model Y(2021-2026)OE#1234424-00-A
Specifications
Details
Product description
Product Overview
This 21700 cylindrical NCA/NCM ternary lithium-ion battery cell is a direct OEM replacement, specially designed for Tesla Model Y (2021-2026) with OE part number 1234424-00-A. Adopting original NCA/NCM composite cathode chemistry consistent with Tesla factory 21700 cell specifications, it delivers superior energy density, stable high-current discharge performance and excellent single-cell consistency. It perfectly adapts to original battery module structure, vehicle BMS system and proprietary liquid cooling thermal management system. Widely applied for Tesla Model Y battery pack repair, module refurbishment, capacity restoration and aftermarket replacement, complying with automotive-grade reliability standards and global B2B wholesale demands.
Key Features
- Exact OEM replacement with OE part number 1234424-00-A, fully compatible with Tesla Model Y (2021-2026) original 21700 battery packs.
- Standard 21700 cylindrical size (21mm diameter × 70mm height), premium NCA/NCM ternary cathode material system.
- High energy density, stable power output supporting vehicle driving range and dynamic acceleration performance.
- Low internal resistance, ultra-low self-discharge rate and reliable long cycle life.
- Perfect matching with Tesla liquid cooling system and original BMS to ensure safe high-power operation.
- Excellent single-cell uniformity, suitable for series-parallel assembly of large EV battery modules.
- No memory effect, supports random shallow charge and discharge to extend overall battery pack service life.
- Strict full-process quality control, stable performance and durable for long-term automotive aftermarket application.
Specifications
- Battery Type: 21700 Cylindrical NCA/NCM Ternary Lithium Battery Cell
- OE Part Number: 1234424-00-A
- Compatible Vehicle: Tesla Model Y (2021, 2022, 2023, 2024, 2025, 2026)
- Nominal Voltage: 3.7V
- Nominal Capacity: 5100mAh
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FAQ
Frequently Asked Questions
▸ What is the nominal capacity and voltage of the cell?
The cell delivers its rated capacity at 3.2V nominal (charge to 3.65V, discharge to 2.5V). Capacity is measured at 0.5C discharge rate after standard formation cycles. Internal resistance is below 0.25 milliohm for prismatic cells.
▸ Can these cells be used in series and parallel configurations?
Yes. Cells can be configured in series (1S to 16S typical packs) and parallel (1P to 4P) for 12V, 24V, 48V, and high-voltage 400V/800V systems. Cell matching within 2% capacity and 0.5 milliohm internal resistance ensures balanced packs.
▸ What cycle life can I expect?
LIANLI LFP cells deliver 6000+ cycles at 80% DoD, 4000+ cycles at 90% DoD, and 2000+ cycles at 100% DoD. Capacity retention remains above 80% throughout the rated cycle life when operated within specified charge/discharge rates and temperature ranges.
▸ What certifications apply to these cells?
All LIANLI LFP cells carry UN38.3, IEC62619, UL1973, CE, GB/T 36276, and MSDS certifications. Cells are manufactured in ISO9001/14001 facilities with automated electrode coating, stacking, and electrolyte filling under dry room conditions (Dew point below -40C).
▸ Do you ship internationally and what are minimum order quantities?
Yes. Sample orders accepted from 4 pieces for evaluation. Bulk orders ship via sea freight in custom wooden cases with anti-static and shock-proof packaging. DDP terms available for major destinations. Air freight available for urgent orders up to 500kg.
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