ASOL 10440 3.7V 320mAh Lithium-ion Battery Cell

Cylindrical Cell

The ASOL 10440 is a 3.7V 320mAh cylindrical Li-ion cell (1.18Wh) in a 1S1P single-cell configuration, packed into a slim 10.0 x 44.0 mm format for space-constrained electronics. Ideal for wearables, wireless audio, IoT devices and portable medical tools. Full OEM & ODM - wire leads, PCM/PCB protection, label and capacity binning all configurable.

Key SpecPrecise Specification
Model No.ASOL 10440
Core Electrical Specs3.7V · 320mAh · 1.18Wh
Cell Configuration1S1P cylindrical Li-ion cell
Discharge Performance0.2C (64mA) / 0.5C (160mA) continuous · 1C (320mA) pulse
Protection SystemPCM/PCB Protection: Available upon request (over-charge / over-discharge / short-circuit)
Cycle Life300–500 cycles (≥80% capacity)
Cell Size & Weight10.0 ± 0.1mm dia × 44.0 ± 0.2mm · ≈ 5.3–5.6g
WiresCustomizable
Compliance & CertificationsAvailable on request

Available for OEM / B2B Orders

This battery model is available for OEM and B2B inquiries. Contact us with your required quantity and application for pricing and sample availability.

Need a Different Specification?

Connector type, wire length, labeling, PCM/BMS, voltage, capacity and pack configuration can be adjusted according to project requirements.

If this model does not match your requirements, send us your target voltage, capacity, configuration and application, and we can evaluate another suitable cylindrical battery solution.

Est. 2020 50+ Countries 2 Facilities OEM & ODMProject Review
Lithium-IonRechargeable lithium
PCM/PCB ProtectionAvailable upon request
OEM / ODMFactory-direct maker
Custom-builtCapacity · voltage · connector
WorldwideShipping & support

Delivering 3.7V / 320mAh (1.18Wh), the ASOL 10440 is a cylindrical lithium-ion cell for space-constrained electronics. Final suitability should be confirmed against the listed dimensions, device load and charging method. Wire, connector, labeling and PCM/PCB protection is available upon request for OEM project evaluation.

Features

  • Slim 10 × 44 mm cylindrical format for space-constrained 10 mm-diameter designs
  • 3.7 V nominal with 320 mAh capacity in the standard 10-series format before the 10 × 84 mm cell
  • 3.7 V nominal voltage and 320 mAh capacity as listed in the specification table
  • Final electrical and mechanical compatibility should be reviewed for the finished device
  • Protection circuit options are available depending on the required battery configuration

Applications

Where the 10440 is used

Handheld Gadgets

Compact handheld gadgets & smart accessories.

Wearables

Slim 10mm cell powers wearables & personal-care devices.

Wireless Audio

Compact runtime for wireless audio & IoT products.

Medical Tools

Reliable power for portable medical & measurement tools.

Custom Packs

Custom low-to-medium power battery packs.

Characteristics

Parameter Specification
Nominal Capacity 320mAh
Nominal Voltage 3.7V
AC Impedance ≥150mΩ
Cell Diameter 10.0 ± 0.1mm
Cell Height 44.0 ± 0.2mm
Cell Weight ~5.3-5.6g
End-of-charge Voltage 4.2V
Charging Method ≥0.5C (160mA) at CC/CV
End-of-discharge Voltage 3.0V
Max. Continuous Discharge Current 0.2C (64mA) / 0.5C (160mA)
Max. Pulse Discharge Current 1C (320mA)
Cycle Life 300-500 cycles (≥80% capacity)
Charging 0°C ~ 45°C
Discharging -20°C ~ 60°C
Storage -10°C ~ 35°C

Frequently Asked Questions

What are the key specifications of the ASOL 10440 3.7V 320mAh Lithium-ion Battery Cell?

The ASOL 10440 3.7V 320mAh Lithium-ion Battery Cell is a 3.7V 320mAh lithium battery, weighing ~5.3-5.6g.

How many charge cycles does the ASOL 10440 3.7V 320mAh Lithium-ion Battery Cell last?

The ASOL 10440 3.7V 320mAh Lithium-ion Battery Cell is rated for 300-500 cycles, for years of dependable performance in your device.

Does ASOL offer OEM/ODM customization for the ASOL 10440 3.7V 320mAh Lithium-ion Battery Cell?

Absolutely. As the manufacturer, ASOL tailors the cell — voltage, capacity, connector, wiring and private-label printing — to match your device and production volume through our OEM/ODM service.

Can I get a sample or a quote for the ASOL 10440 3.7V 320mAh Lithium-ion Battery Cell?

Sample evaluation may be available for selected cylindrical and lithium polymer battery projects, subject to specification review and product availability. Sample freight is paid by the customer. For a quote, email info@asolbattery.com or WhatsApp +86 15779858703 — replies typically arrive within 24 hours on working days.


Get a Sample Evaluation or Quote Today

Email: info@asolbattery.com
WhatsApp: +86 15779858703
Response: Within 24 hours on working days

Need a different size or capacity? Explore ASOL’s full cylindrical battery range →

Project Inquiry

Send Us Your Battery Requirements

For a faster and more accurate quotation, please provide the key details below.
ASOL will recommend a suitable lithium battery solution based on your application, voltage, capacity, size and connector requirements.

Target Voltage3.7V, 7.4V, 12.8V, 24V, 48V or custom voltage
CapacityRequired Ah / Wh or expected runtime
Size / Dimension RequirementBattery size, device space or housing limit
ApplicationDevice type, working current and usage environment
QuantityEligible sample project, pilot run or batch production
Connector / Wire RequirementConnector model, wire length and polarity
OEM / Branding RequestLogo, label, casing or packaging request
Destination CountryShipping country and required documents

ASOL will review your requirements and reply with a suitable battery solution.

Shenzhen Asol Battery Tech Co., Ltd. (ASOL)

ASOL manufactures and supplies lithium batteries and battery systems for B2B applications, including RV LiFePO4 batteries, cylindrical lithium-ion cells and packs, lithium polymer batteries, lead-acid replacement batteries and energy storage systems. Additional models and OEM/ODM configurations are available for different application requirements.

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ASOL manufactures and supplies lithium batteries and battery systems for B2B applications, with additional models and OEM/ODM support available for different requirements.

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