Description
3600mAh High-Capacity 26650 Lithium Iron Phosphate (LFP) Cylindrical Battery (4-Pack)COMMERCIAL GRADE · PRODUCTION
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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Store the cell in a dry, cool environment to prevent capacity degradation and avoid thermal events. Isolate terminals to prevent short circuits that could activate the safety vent.
- Safety Vent Function: The built-in safety vent releases internal pressure under overcharge or thermal abuse conditions.
- Nail Penetration Resistance: The cell does not ignite or explode during nail penetration testing, demonstrating intrinsic safety.
- Cycle Life Degradation: Operating at elevated temperatures reduces cycle life below the rated 2000 cycles at 100% depth of discharge.
Follow these steps to safely prepare and charge the battery for first use. Adherence to these steps minimizes risk of damage or injury.
Required Equipment: Battery management system (BMS) compatible with LFP chemistry, Constant-current constant-voltage (CC-CV) charger
- Inspect Cell
Inspect the cell for any visible dents, leaks, or corrosion before handling. - Measure Voltage
Measure the open-circuit voltage to ensure it is within the safe storage range. - Connect BMS
Connect the cell to a BMS that monitors individual cell voltage and temperature. - Configure Charger
Set the charger to use the constant-current constant-voltage profile for LFP cells. - Charge Cell
Apply the recommended constant current and allow the charger to switch to constant voltage when the cutoff is reached.
How does the 3600mAh capacity and 132Wh/kg energy density of this 26650 LFP cell affect its cycle life trade-off compared to lower-capacity LFP cells?
This cell achieves a high energy density of 132Wh/kg and 3600mAh capacity while maintaining a standard cycle life of 2000 cycles at 100% DOD and an exceptional 7000 cycles at 1C charge/discharge. This performance trade-off is favorable because LFP chemistry inherently provides long cycle life, and the high capacity does not significantly degrade longevity under controlled charge/discharge rates.
Can this 26650 LFP battery be integrated into a high-voltage series pack with other LFP cells, and what are the critical compatibility constraints?
Yes, it is engineered for high-voltage series configurations, with a nominal voltage of 3.2V and a maximum charge voltage of 3.65 ± 0.03V. Critical compatibility constraints include maintaining cell-to-cell consistency in internal resistance (≤20 mΩ) and capacity (3600 mAh minimum) to prevent imbalance, and ensuring the charge temperature remains within 0°C to 45°C to avoid damage.
What are the specific handling and safety requirements for this LFP cell regarding nail penetration and thermal runaway prevention?
This cell features a built-in safety vent and passes nail penetration testing without fire or explosion, demonstrating intrinsic LFP safety. Handling requirements include operating within the discharge temperature range of -20°C to 60°C and charge temperature range of 0°C to 45°C, and avoiding conditions that exceed the maximum continuous discharge current of 3C to prevent thermal stress.
The 26650 3600mAh LFP cell delivers high energy density (132 Wh/kg) and exceptional cycle life (up to 7000 cycles at 1C), ideal for stationary storage and auxiliary power, but requires precise charge voltage control and cannot be charged below 0°C without thermal management.
Positive
- High energy density for LFP chemistry: 132 Wh/kg energy density exceeds typical LFP range (90–120 Wh/kg), enabling more compact battery pack designs for space-constrained applications.
- Exceptional cycle life under controlled conditions: Up to 7000 cycles at 1C charge/discharge rate and 2000 cycles at 100% DOD provide outstanding longevity for long-duration energy storage and backup power systems.
Trade-offs
- Charging restricted to above-freezing temperatures: Charge temperature range of 0°C to 45°C prohibits charging in sub-zero environments without active thermal management, limiting cold-weather deployment.
- Tight charge voltage tolerance requires precision: Maximum charge voltage of 3.65±0.03 V demands accurate charging equipment to avoid overvoltage stress, which could reduce cycle life or trigger safety vent activation.
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).
