1100 mAh 18650 Cylindrical Sodium-Ion Cell – 4 Pack | 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.
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Supplier: Atomfair
Brand: ATOMFAIR®
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This cell must be operated within the specified voltage window of 2.0 V to 4.2 V and current limits to prevent degradation or safety hazards. Overcharging beyond 4.25 V or overdischarging below 2.0 V may cause irreversible capacity loss or thermal runaway.
- Charging Voltage Limit: The charging cut-off voltage must not exceed 4.25 V to prevent overcharge damage.
- Discharge Voltage Limit: The discharge ending voltage must not fall below 1.95 V to avoid overdischarge.
- Continuous Discharge Current: The continuous discharge current must not exceed 1.1 A to prevent overheating.
Follow these steps to safely charge and discharge the cell within its rated voltage and current limits. Always verify that the charger and load settings match the specified parameters before connection.
Required Equipment: Compatible CC/CV charger
- Set charging parameters
Set the charging current to 0.5C (550 mA) and the charging cut-off voltage to 4.2 V. - Set discharge parameters
Set the discharge ending voltage to 2.0 V and ensure the continuous discharge current does not exceed 1.1 A. - Limit pulse discharge
Limit the pulse discharge current to 2.2 A.
What is the significance of the 0.5C standard charge/discharge rate for the 1100 mAh 18650 sodium-ion cell, and how does it relate to the maximum continuous discharge current?
The 0.5C standard rate corresponds to 550 mA (0.5 × 1100 mAh), which is half of the specified maximum continuous discharge current of 1.1 A. This indicates that while the cell can safely deliver up to 1.1 A continuously, standard operation and longevity are achieved at the lower 0.5C rate, as stated in the product specifications.
What charging voltage cut-off and discharge ending voltage must a device or charger support for this 1100 mAh 18650 sodium-ion cell?
The cell requires a charging cut-off voltage of 4.2 ±0.05 V and a discharge ending voltage of 2.0 ±0.05 V. Because its nominal voltage is 3.0 V—lower than typical lithium-ion cells—devices designed for 3.6–3.7 V nominal operation may not be compatible; the product's application matching guidelines stress verifying charger limits and protection circuit requirements before integration.
What are the physical dimensions and weight of the 1100 mAh 18650 sodium-ion cell, and how do they affect standard battery pack assembly?
The cell measures up to 65.1 mm in height and 18.4 mm in diameter with a weight ≤40 g, matching the standard 18650 form factor. This allows use in conventional holders and enclosures, but the product's application matching instructions emphasize confirming terminal arrangement, protection circuit compatibility, and charger limits for the intended pack assembly.
This 1100 mAh 18650 sodium-ion cell delivers a 3.0 V nominal voltage with a 1C continuous discharge and 2C pulse capability, but its 4.2 V charging cut-off and 2.0 V discharge end voltage require careful BMS and charger integration for safe operation.
Positive
- Low internal resistance: Internal resistance ≤60 mOhm at 650 Hz AC impedance supports efficient power delivery and reduced heat generation.
- Pulse discharge capability: Maximum pulse discharge current of 2.2 A (2C rate) enables short-duration high-power bursts for applications like power tools or backup systems.
Trade-offs
- Limited continuous discharge: Maximum continuous discharge current of 1.1 A (1C rate) restricts use in high-drain applications that require sustained current above 1.1 A.
- Voltage matching required: The 4.2 V charging cut-off and 2.0 V discharge end voltage differ from common lithium-ion chemistries, necessitating compatible BMS, charger, and protection circuit configuration.
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).
