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Low temperature LFP battery cell structured as a standard 26650 cylindrical component with ultra stable olivine cathode chemistry.

26650 Low-Temperature LFP Cylindrical Cell 3200mAh ATOMFAIR®

$33.00

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.

ISO 9001:2025 and IATF 16949 traceable 26650 LiFePO4 cell with 3200mAh capacity, 3.2 V nominal voltage, -30°C charge and -50°C discharge. Order now.

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3200mAh Ultra-Low-Temperature 26650 Lithium Iron Phosphate (LFP) Cylindrical Battery (4-Pack)

COMMERCIAL GRADE · PRODUCTION

Product Overview
The ATOMFAIR® 26650 Low-Temperature LFP (LiFePO4) cylindrical cell is engineered for extreme cold-weather energy storage. With a nominal capacity of 3200mAh and the ability to charge at temperatures as low as -30°C and discharge down to -50°C without external heating, this cell eliminates the need for battery warmers in harsh winter environments. Offering high continuous discharge current (5C / 16A), pulse capability (32A for 30s), military-grade reliability, and competitive pricing, it is the ideal choice for off-grid solar storage, EV auxiliary batteries, cold-region telecom backup, polar research, and cold-chain logistics. For bulk inquiries or official volume quotations, please contact us via email at inquiry@atomfair.com.

Technical Specifications

PARAMETER VALUE
General Parameters
Nominal Capacity (0.5C) 3200 mAh
Minimum Capacity (0.5C) 3150 mAh
Nominal Voltage 3.2 V
Energy Density 119 Wh/kg
Internal Resistance ≤15 mΩ
Weight ≈85 g
Cycle Life (80% DOD, 25°C) 2000 cycles
Charge Parameters
Max. Charge Voltage 3.65 ± 0.03 V
Standard Charge Current 1.0C
Max. Charge Current 3.0C @ T > 0°C; 0.5C @ T ≤ 0°C; 0.2C @ T ≤ -20°C
Discharge Parameters
Min. Discharge Voltage 2.00 V @ T > -20°C; 1.50 V @ T ≤ -20°C
Standard Discharge Current 1.0C
Max. Continuous Discharge Current 5.0C
Discharge Performance >90% @ -40°C to 1.5V; >90% @ -20°C to 2.0V; >98% @ 60°C to 2.0V
Temperature Ranges
Charge Temperature -30°C to 60°C
Discharge Temperature -50°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
  • Direct Charge & Discharge at Extreme Low Temperatures: No pre-heating required — capable of charging at -30°C and discharging at -50°C.
  • High Power Output in Cold Environments: Supports continuous 16A discharge (5C) and pulse 32A (30s) with >90% efficiency at low temperatures.
  • Fast Charging above 0°C: 3C rapid charging capability for reduced downtime in warmer conditions.
  • Military-Grade Reliability at Civilian Prices: Excellent durability and robust cycle life (2000 cycles @ 80% DOD) without premium cost.

APPLICATION SCOPE: Off-grid solar storage in arctic regions, EV auxiliary batteries, telecom backup in extreme climates, polar research equipment, cold-chain logistics, and portable power for winter sports.
PACKAGING: Anti-static plastic trays (50 cells per tray, 200 cells per master carton). Insulated terminal covers included for safe transport.
IMPORTANT NOTICE: For charging at -30°C, use the recommended CC-CV profile with a reduced charge current (≤0.2C). The cell will not accept charge below -30°C. Always pair with a low-temperature BMS that enables charging only when cell temperature is within safe limits.

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

This lithium iron phosphate cylindrical cell requires strict adherence to charge temperature and current limits to prevent damage. The cell must be paired with a low-temperature BMS and charged using a CC-CV profile with reduced current at sub-zero temperatures.

  • Charge Temperature Range: Charge only within -30°C to 60°C; the cell will not accept charge below -30°C.
  • Charge Current Limits: Use a maximum charge current of 0.2C at temperatures ≤ -20°C, 0.5C between -20°C and 0°C, and 3.0C above 0°C.
  • Discharge Voltage Limits: Do not discharge below 2.0V at temperatures above -20°C, or below 1.5V at -20°C and below, to prevent over-discharge damage.
  • BMS Requirement: Always pair the cell with a low-temperature BMS that enables charging only when the cell temperature is within safe limits.
  • Charging Profile: Use a CC-CV charging profile at low temperatures, especially at -30°C with reduced current.

This procedure outlines the steps required to safely charge the battery at low temperatures, particularly at -30°C. Adherence to these steps prevents damage and ensures reliable operation.

Required Equipment: Low-temperature BMS

  1. Connect BMS
    Connect the cell to a low-temperature BMS that restricts charging to safe temperature ranges.
  2. Set Charge Current
    Set the charge current to ≤0.2C when charging at -30°C, or adjust according to the temperature-based current limits.
  3. Apply Charging Profile
    Apply a CC-CV charging profile for the entire charge cycle, maintaining constant current until voltage reaches 3.65V then constant voltage.

What is the maximum charge current for the 3200mAh LFP cell at temperatures below 0°C?

The maximum charge current depends on temperature: above 0°C, the cell can accept up to 3.0C; at or below 0°C, limit to 0.5C; and at or below -20°C, reduce to 0.2C. This ensures safe charging without damaging the cell.

What BMS configuration is required for charging this LFP cell at -30°C?

A low-temperature BMS that only permits charging when the cell temperature is within safe limits is mandatory. Use a CC-CV profile with a reduced charge current of ≤0.2C to avoid damage. The cell will not accept charge below -30°C.

What is the minimum discharge voltage cutoff for this cell at temperatures below -20°C?

For temperatures below -20°C, the minimum discharge voltage is 1.50 V. Above -20°C, it is 2.00 V. This allows the cell to deliver >90% capacity even at -40°C when discharged to 1.5V.

The ATOMFAIR 26650 LFP cell offers 3200mAh with extreme low-temperature charge/discharge capability, but requires controlled charging rates and a compatible BMS for reliable operation in sub-zero environments.

Positive

  • Extreme Low-Temperature Operation: Capable of direct charging at -30°C and discharging at -50°C without external heating, eliminating the need for battery warmers in harsh winter environments.
  • High Power Output in Cold: Supports continuous 16A discharge (5C) and pulse 32A for 30 seconds with >90% efficiency at low temperatures, providing reliable power in extreme cold.

Trade-offs

  • Reduced Charge Rate at Low Temperatures: At temperatures below -20°C, the maximum charge current is limited to 0.2C, significantly increasing charging time. Charging below -30°C is not possible.
  • Requires Compatible Low-Temperature BMS: The cell must be paired with a low-temperature BMS that enables charging only when the cell temperature is within safe limits, adding system complexity.

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 excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

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