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High density 26650 LFP cylindrical cell battery engineered with an advanced olivine cathode architecture for large scale stationary storage packs.

26650 3200mAh High Capacity LFP Battery

$7.50

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

ATOMFAIR® 26650 LFP cell delivers 3200mAh, 3.2V nominal, 122Wh/kg energy density, and 2000 cycles at 100% DOD. Commercial grade with safety vent. Order now.

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Description

3200mAh High-Capacity 26650 Lithium Iron Phosphate (LFP) Cylindrical Battery | ATOMFAIR

COMMERCIAL GRADE · PRODUCTION

Product Overview
The ATOMFAIR® 26650 High-Capacity LFP (LiFePO4) cylindrical cell delivers industry-leading energy density of 122Wh/kg with a nominal capacity of 3200mAh, making it an ideal choice for energy-dense applications. Engineered for long-duration and high-voltage series configurations, this cell offers exceptional cell-to-cell consistency, a design life of 20 years, and a 5-year warranty. With 1C charge/discharge cycle life reaching 7000 cycles and standard cycle life of 2000 cycles at 100% DOD, it provides outstanding longevity for stationary storage, EV auxiliary batteries, and backup power systems. Featuring a built-in safety vent and nail penetration without fire or explosion, it combines high energy with intrinsic LFP safety. This model is a proven specification for European and North American markets with long-term stable mass production. For bulk inquiries or official volume quotations, please contact us via email at inquiry@atomfair.com.

Technical Specifications

PARAMETER VALUE
General Parameters
Nominal Capacity (0.2C) 3200 mAh
Minimum Capacity (0.2C) 3200 mAh
Nominal Voltage 3.2 V
Energy Density 122 Wh/kg
Internal Resistance ≤20 mΩ
Weight ≈84 g
Cycle Life (100% DOD, 25°C) 2000 cycles
Charge Parameters
Max. Charge Voltage 3.65 ± 0.03 V
Standard Charge Current 0.5C
Max. Charge Current 2C
Discharge Parameters
Min. Discharge Voltage 2.0 V
Standard Discharge Current 1C
Max. Continuous Discharge Current 3C
Temperature Ranges
Charge Temperature 0°C to 45°C
Discharge Temperature -20°C to 60°C
Manufacturing Compliance: Fully traceable production under ISO 9001:2025 and IATF 16949 standards. Custom form factors or electrode formulations available upon request.

Key Features & Advantages
  • High Capacity 26650 LFP Cell: 3200mAh nominal capacity with 122Wh/kg energy density — ideal for high-voltage, large-format battery packs.
  • Exceptional Cycle Life: 7000 cycles at 1C charge/discharge, and 2000 cycles at 100% DOD under standard conditions.
  • Long Design Life & Warranty: 20-year design life with 5-year warranty, ensuring reliable performance for long-term installations.
  • Excellent Cell Consistency: Suitable for high-voltage series configurations with minimal voltage variation between cells.
  • Intrinsic Safety: Built-in explosion-proof vent, passes nail penetration without fire or explosion, zero thermal runaway risk.
  • Globally Proven: Long-term stable mass production, designated model for European and North American markets.

APPLICATION SCOPE: Stationary energy storage systems (ESS), EV auxiliary batteries, telecom backup, UPS systems, solar street lights, and high-voltage battery packs requiring excellent cell matching.
PACKAGING: Anti-static plastic trays (50 cells per tray, 200 cells per master carton). Insulated terminal covers included for safe transport.
IMPORTANT NOTICE: For maximum cycle life, operate cells within recommended voltage window (2.5V – 3.65V) and avoid sustained high-temperature operation. Always use a dedicated LFP BMS with cell balancing, especially for high-voltage series strings.

TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

Store the battery at partial state of charge between 30% and 50% to minimize calendar aging. Protect the terminals from short circuits and avoid charging below 0 °C to prevent irreversible damage.

  • Overdischarge Prevention: Discharging below 2.5 V per cell can cause permanent capacity loss and internal damage.
  • Thermal Runaway Avoidance: Operating above 60 °C or exposing the battery to external heat sources increases the risk of thermal runaway.

Inspect the battery for visible damage before first use to ensure structural integrity. Connect to a charger rated for LiFePO4 chemistry to prevent overvoltage or overcurrent.

Required Equipment: LiFePO4-compatible constant current/constant voltage charger, Multimeter for voltage verification

  1. Inspect Battery
    Examine the cell casing for dents, swelling, or electrolyte leakage and discard any damaged unit.
  2. Verify Voltage
    Measure the open-circuit voltage to confirm it falls within the manufacturer's storage range of 3.0 V to 3.3 V.
  3. Connect Charger
    Attach the charger leads to the battery terminals, ensuring correct polarity and tight contact.
  4. Set Charging Parameters
    Program the charger to a constant current of 3.2 A (1C) and a constant voltage of 3.65 V for the charge cycle.

How does the 1C charge/discharge cycle life of 7000 cycles compare to the standard 2000 cycles at 100% DOD for this 26650 LFP cell?

The 7000-cycle figure is achieved under 1C charge/discharge conditions, which typically involve shallower depth-of-discharge (DOD) per cycle compared to the standard 2000 cycles at 100% DOD. The product description specifies a standard cycle life of 2000 cycles at 100% DOD and 25°C, while the 1C cycle life of 7000 cycles reflects optimized testing protocols that reduce stress on the electrode materials, leveraging the intrinsic stability of LiFePO4 chemistry.

Can this 26650 LFP cell be directly integrated into a 48V stationary storage system without additional voltage balancing circuitry?

No, direct integration into a 48V system without a battery management system (BMS) is not recommended. The cell has a nominal voltage of 3.2V and a maximum charge voltage of 3.65 ± 0.03V, requiring 15 cells in series for a nominal 48V pack. The product description emphasizes exceptional cell-to-cell consistency, but a BMS is still necessary to manage charge termination at 3.65V per cell and prevent over-discharge below the minimum of 2.0V, ensuring safety and longevity.

What are the specific storage and handling requirements for this LFP cell to maintain its 20-year design life?

To achieve the 20-year design life, store the cell at temperatures between -20°C and 60°C for discharge, but for long-term storage, maintain a partial state of charge around 30-50% and temperatures between 15°C and 25°C. The product description specifies a charge temperature range of 0°C to 45°C and a discharge range of -20°C to 60°C, and the built-in safety vent ensures pressure relief during abnormal conditions, but avoid deep discharges below 2.0V to prevent capacity fade.

The 26650 3200mAh LFP cell delivers a strong energy density of 122Wh/kg and exceptional cycle life of 2000 cycles at 100% DOD, making it well-suited for long-life stationary storage and backup applications. However, its charge temperature range of 0°C to 45°C and a 3C max continuous discharge current impose operational constraints that must be accounted for in system design.

Positive

  • High energy density for 26650 format: With 3200mAh nominal capacity and 122Wh/kg energy density, this cell provides industry-leading volumetric and gravimetric energy for its class, enabling compact, high-voltage battery packs for stationary storage and auxiliary power.
  • Exceptional cycle life and longevity: Rated for 2000 cycles at 100% DOD and up to 7000 cycles under 1C charge/discharge, combined with a 20-year design life, this cell offers outstanding operational longevity with minimal degradation over time.

Trade-offs

  • Limited charge temperature range: The cell can only be charged between 0°C and 45°C, restricting use in cold environments or requiring thermal management systems to maintain charge capability at low ambient temperatures.
  • Moderate continuous discharge current: With a maximum continuous discharge current of 3C (9.6A), this cell is not optimized for high-power applications such as power tools or electric vehicles requiring sustained high-rate discharge.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

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