3400mAh High-Capacity 26650 Lithium Iron Phosphate (LFP) Cylindrical Battery (4-Pack)COMMERCIAL GRADE · PRODUCTION
|
|||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||
|
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 cells within 2.5V to 3.65V and avoid sustained high-temperature operation to prevent capacity degradation. Use insulated terminal covers and anti-static trays to prevent short circuits during transport and storage.
- Voltage Window: Operate cells between 2.5V and 3.65V to maintain cycle life and prevent under-voltage or over-voltage damage.
- Temperature Limits: Avoid sustained high-temperature operation as it accelerates degradation of the LFP chemistry.
- Safety Vent: The built-in explosion-proof vent releases pressure under fault conditions and must not be obstructed.
- BMS Requirement: A dedicated LFP battery management system with cell balancing is required for high-voltage series strings.
Follow these steps to assemble and operate the 26650 LFP cells in a battery pack. Proper initialization and handling maximize cycle life and prevent safety incidents.
Required Equipment: LFP battery management system (BMS) with cell balancing, LFP-compatible constant-current/constant-voltage charger, Insulated terminal covers
- Inspect cells
Inspect each cell for physical damage, swelling, or leakage before use. - Verify voltage
Verify each cell's voltage is between 2.5V and 3.65V using a multimeter before assembly. - Connect BMS
Connect cells in series only with a dedicated LFP BMS that provides cell balancing. - Charge correctly
Charge the pack using a CC/CV profile with a maximum charge voltage of 3.65V and current not exceeding 2C. - Avoid high temperature
Avoid operating the battery pack at sustained temperatures above 60°C to preserve cycle life.
What is the difference between the 7000-cycle life at 1C and the 2000-cycle life at 100% DOD for this 26650 LFP cell?
The cell achieves 7000 cycles under 1C charge/discharge conditions but 2000 cycles at 100% Depth of Discharge (DOD) under standard conditions at 25°C. The 1C cycling reflects a more moderate usage profile with partial charge/discharge, while 100% DOD cycling represents full energy utilization per cycle, which accelerates capacity fade. For extended lifespan, operating within a reduced DOD window (e.g., 80%) is recommended.
What BMS requirements are necessary for high-voltage series strings using these ATOMFAIR 26650 LFP cells?
A dedicated LFP battery management system (BMS) with active or passive cell balancing is required for high-voltage series configurations. The cell's excellent consistency minimizes voltage variation, but balancing ensures safe operation and maximizes cycle life. The BMS must protect against overcharge (max 3.65±0.03V), overdischarge (min 2.0V), and temperature extremes (charge 0°C to 45°C, discharge -20°C to 60°C), per the product specifications.
What safety certifications and protections does this 26650 LFP cell have against nail penetration and thermal runaway?
The cell includes a built-in explosion-proof vent and has passed nail penetration testing without fire or explosion, demonstrating zero thermal runaway risk. It is manufactured under ISO 9001:2025 and IATF 16949 standards. For safe transport, insulated terminal covers are included, and operation within the recommended voltage window (2.5V – 3.65V) with a compatible LFP BMS is critical to maintain intrinsic safety.
This 26650 LFP cell delivers 3400mAh capacity and 128Wh/kg energy density with 7000-cycle life at 1C rate, but requires careful thermal management and a dedicated BMS for series stacking.
Positive
- High capacity and energy density: 3400mAh nominal capacity with 128Wh/kg energy density, competitive for LFP cylindrical cells in stationary storage and auxiliary power applications.
- Exceptional cycle life and safety: 7000 cycles at 1C charge/discharge and 2000 cycles at 100% DOD; passes nail penetration without fire or explosion, with built-in explosion-proof vent.
Trade-offs
- Limited charge temperature range: Charge temperature restricted to 0°C to 45°C; sub-zero charging is not supported, which may require thermal management in cold environments.
- Requires dedicated LFP BMS: For high-voltage series strings, a dedicated LFP battery management system with cell balancing is mandatory to maintain safe operation and maximize cycle life.
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).
