5.5 Ah Square-Shell Sodium-Ion Power Cell | ATOMFAIRProduct Type: Sodium-ion battery product
Sodium-ion battery product
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BATTERY PROCUREMENT SUPPORT
For model selection, system matching or configuration confirmation, contact our technical sales team.
E-MAIL: inquiry@atomfair.com
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Supplier: Atomfair
Brand: ATOMFAIR®
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The cell must be operated within its specified voltage window and temperature range to prevent irreversible capacity loss. Continuous charge and discharge currents are limited to 10C and 30C respectively, with pulse currents capped at 40C and 75C for 10 seconds.
- Voltage Constraint: Operate the cell between 2.0-3.45 V at or above 0°C and between 1.5-3.45 V below 0°C.
- Temperature Constraint: Discharge below 0°C requires a reduced voltage floor of 1.5 V to avoid damage.
- Current Constraint: Continuous charge current must not exceed 10C and continuous discharge current must not exceed 30C.
- Pulse Current Constraint: Pulse charge and discharge currents of 40C and 75C are permissible only for durations up to 10 seconds.
- Cycle Life Constraint: The cell retains at least 80% capacity after 45,000 cycles when operated at 20-80% SOC with 4C charge/discharge rates.
Confirm that the cell's voltage range, current limits, and clamping force match the planned battery assembly. Verify that the thermal and electrical conditions of the downstream module are within the cell's specifications.
Required Equipment: Clamping fixture, Thermal management system
- Review cell specifications against assembly requirements
Review the cell's voltage range, continuous and pulse current, clamping force, and cycle-life requirements against the planned battery assembly. - Match cell to downstream module design
Match the cell dimensions, pole spacing, thermal conditions, and electrical limits with the downstream module or pack design. - Document procurement requirements
Include the target capacity, voltage, current profile, quantity, and any assembly or thermal-management requirements in the procurement documentation.
What is the cycle-life retention of the 5.5 Ah square-shell sodium-ion cell under standard testing conditions?
The cell retains at least 80% of its rated capacity after 45,000 cycles when operated under 20-80% state-of-charge (SOC) at 4C charge and 4C discharge rates. This cycle-life specification is based on the listed operating mode and does not apply to full-depth cycling or higher C-rate profiles.
Can this sodium-ion cell be charged at sub-zero temperatures, and what voltage limits apply?
Yes, the cell can operate below 0°C, but the operating voltage window shifts to 1.5-3.45 V instead of the standard 2.0-3.45 V range used at or above 0°C. The rated capacity and charge/discharge rates (10C continuous charge, 30C continuous discharge) are specified for the standard temperature range; performance at sub-zero temperatures may require validation against the target application.
What are the pulse current capabilities and mechanical constraints for integrating this square-shell cell into a battery pack?
The cell supports 40C pulse charging and 75C pulse discharging for up to 10 seconds. Mechanical integration requires attention to the 148 x 18 x 65 mm form factor, clamping force requirements, and pole spacing to match the downstream module or pack design. The cell weight is 0.29 ±0.03 kg, and thermal management must accommodate the high-rate pulse currents.
The 5.5 Ah square-shell sodium-ion power cell delivers a 2.90 V nominal voltage with 10C continuous charging and 30C continuous discharging, targeting at least 80% capacity retention after 45,000 cycles under 20-80% SOC and 4C/4C conditions, making it suitable for high-rate power battery applications.
Positive
- High-rate charge and discharge capability: Supports 10C continuous charging and 30C continuous discharging, with pulse capability up to 40C charge and 75C discharge for 10 seconds, enabling rapid energy transfer in power-demanding applications.
- Extended cycle life under partial SOC: Retains at least 80% capacity after 45,000 cycles when operated within 20-80% SOC at 4C charge/4C discharge, reducing replacement frequency in high-cycling scenarios.
Trade-offs
- Temperature-dependent voltage window: Operating voltage range shifts from 2.0-3.45 V above 0°C to 1.5-3.45 V below 0°C, requiring thermal management or adjusted system design for low-temperature operation.
- Mechanical and thermal integration constraints: The 148 x 18 x 65 mm square-shell form factor demands precise clamping force, pole spacing, and thermal management in module or pack assembly to maintain performance and safety.
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).
