Description
5000mAh High-Capacity 26650 NCM Lithium-Ion 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 and handle the battery in a controlled environment to maximize cycle life and prevent thermal runaway. Adhere to voltage limits and avoid mechanical damage to the cell casing to preserve integrity.
- Short Circuit Prevention: Isolate the positive and negative terminals from metallic objects during storage and handling to prevent short circuits.
- Safety Vent Protection: Keep the safety vent area unobstructed to allow proper gas release in the event of overpressure.
Follow these steps to safely handle and initialize the lithium-ion battery before first use. Proper initialization ensures reliable performance and minimizes the risk of thermal runaway.
Required Equipment: Lithium-ion battery charger with CC/CV profile, Digital multimeter, Battery management system (BMS)
- Pre-Use Inspection
Inspect the battery for any physical damage, such as cracks, dents, or leaking electrolyte, and discard if compromised. - Voltage Check
Measure the open-circuit voltage with a multimeter to ensure it is above 2.5V and below 3.7V before charging. - Charger Connection
Connect the battery to a lithium-ion charger with CC/CV profile and set the charge current to a maximum of 5A (1C rate). - BMS Integration
Integrate the battery with a battery management system to monitor cell voltage and temperature during operation.
How does the 5000mAh 26650 NCM cell's cycle life at 1C charge/discharge compare to standard 100% DOD cycling, and what trade-off in energy density versus longevity should be expected?
At 1C charge/discharge, this cell achieves 3000 cycles to 80% SOH, while standard 100% DOD cycling yields 1500 cycles. The trade-off is that operating at lower depth of discharge or reduced C-rates extends cycle life significantly, but the cell's 190Wh/kg energy density is already optimized for high-capacity stationary storage rather than extreme longevity.
Can the ATOMFAIR 26650 NCM cell be integrated into existing 26650 battery packs designed for LFP or other lithium chemistries without BMS reconfiguration?
No, direct replacement is not recommended without BMS reconfiguration. This NCM cell has a nominal voltage of 3.6V and a max charge voltage of 4.20V, which differs from LFP's typical 3.2V nominal and 3.65V max. The BMS must be reprogrammed for the higher voltage window and the 3C max continuous discharge current to prevent overcharge or under-voltage damage.
What are the critical handling and storage requirements for the 26650 5000mAh NCM cell to ensure safety and prevent thermal runaway?
Charge only between 0°C and 45°C and discharge between -20°C and 60°C to avoid lithium plating or internal damage. The cell includes a built-in safety vent, but storage should be at 30-50% state of charge in a dry, cool environment below 25°C. Never exceed the max charge voltage of 4.20V or the max continuous discharge current of 3C (15A) to maintain the zero-fire/zero-explosion field record.
The ATOMFAIR 26650 NCM cylindrical cell delivers industry-leading energy density of 190 Wh/kg and 5000 mAh capacity, with cycle life up to 3000 cycles at 1C charge/discharge. However, its narrow charge temperature range (0–45°C) and tight voltage tolerances (4.20±0.03 V max charge) require precise thermal management and BMS integration for reliable deployment.
Positive
- Highest capacity 26650 cell available: With 5000 mAh nominal capacity and 190 Wh/kg energy density, this cell offers the highest capacity in the 26650 form factor, enabling longer runtime in space-constrained applications.
- Exceptional cycle life at 1C rates: Achieves 3000 cycles to 80% SOH under 1C charge/discharge and 1500 cycles at 100% DOD, providing extended operational lifespan for stationary storage and backup systems.
Trade-offs
- Restricted charge temperature range: Charge operation is limited to 0°C to 45°C; outside this window, performance degrades or safety may be compromised, requiring thermal control in cold or hot environments.
- Precise voltage management required: With a maximum charge voltage of 4.20±0.03 V and a minimum discharge voltage of 2.75 V, the cell demands a BMS with tight voltage regulation to prevent overcharge or deep 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).
