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Product Details

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    Discharge Rate
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    Long Cycle Life
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    Ultra-Low Self-Discharge
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    Wide Temperature Range

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Lithium batteries exhibit varying discharge rates. Ufine's batteries support a maximum discharge rate of 5.0C,delivering high power output in short durations.
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Ufine's lithium battery maintains over 80% capacity after 500 cycles at room temperature,utilizing 0.5C charge and discharge conditions.
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Batteries exhibit differential self-discharge rates at 100% and 70% charge states.
Self-discharge is higher at 100% state of charge (SOC) compared to 70% SOC.
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Lithium batteries operate within the -20°C to 60°C discharge temperature range.
Ufine's custom low-temperature batteries can be used for -40°C to 55°C operation, catering to diverse outdoor scenarios.

Precision Manufacturing Process

Rigorous manufacturing techniques guarantee reliability and consistency in the battery's performance.

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Environmental Sustainability

A-grade cells and leak-proof design promote eco-friendliness, reducing environmental impact while maintaining robust power.

Applications

The battery is designed for various applications, including but not limited to medical carts, handheld GPS systems, camping equipment, electric scooters, and solar power banks.

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Speaker

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Hair Clipper

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Electric Toothbrush

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Power Tool


Battery Specification

  • 1. Mechanical Characteristics

    Cell 18650-2P PCM Yes
    NTC No Weight appr. 85g
    Configuration 1S2P
  • 2. Electrical Specification

    Capacity 4400mAh Nominal Voltage 3.7V
    Energy 16.28Wh Internal Resistance less than 100mΩ
    Max. Charge Voltage 4.2V Discharge Cut Off 2.75V
    Max. Charge Current 4400mA Max. Discharge Current 4400mA
    Standard Charge Current 880mA Standard Discharge Current 880mA
    Charging Temperature 0℃ to 45℃ Discharging Temperature -20℃ to 60℃
    Storage Temp.Range 1 year at -20℃ to +30℃ 3 mos. at -20℃ to +45℃ 1 mo. at -20℃ to +60℃ Cycle life 100 cycles ≥92% 300 cycles ≥88% 500 cycles ≥80%
  • 3. Cell protection

    Overcharge Detection 4.28V ±50mV (80 to 200msec delay, release 4.08V ±50mV) Overdischarge Detection 2.4V ±100mV (40 to 120msec. delay, release 3.0V ±100mV)
    Overcurrent Detection 5A to 9A (9 to 15msec. delay) Short protection Yes
Download Product Datasheet

Lipo Battery Cell Capacity Fast Calculator

Please enter your battery information to calculate the battery capacity and energy.

The capacity calculated by this tool is only an approximate value. If you need an accurate assessment, please contact our professional engineers.

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3.7 V 4400Ah 18650 Battery Pack Application

Li-ion 18650 Battery For Speaker

Elevate your daily playlist with our lithium batteries tailored for speakers. With extended playtime due to its high energy density, these batteries keep the music flowing for longer durations, ensuring your beats accompany you throughout the day without pause. Their low self-discharge rates mean your speakers are always ready for your favorite tunes.

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Li-ion 18650 Battery For Hair Clipper

Our lithium batteries for hair clippers boast high energy density, ensuring prolonged and consistent power during grooming sessions. Built to withstand frequent use, these batteries excel in professional salon settings. Their adaptable designs seamlessly fit into various clipper models, guaranteeing reliable and enduring performance for all grooming needs.

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Li-ion 18650 Battery For Electric Toothbrush

Specifically crafted for toothbrushes, our lithium batteries offer extended usage due to their high energy density, supporting prolonged oral care routines. With consistent and dependable performance, these batteries cater to daily oral hygiene needs without disruption. Their adaptable configurations facilitate easy installation into different toothbrush models, ensuring reliable and uninterrupted functionality for maintaining dental health.

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Li-ion 18650 Battery For Power Tool

Our lithium batteries for power tools embody high energy density, delivering prolonged and robust power for uninterrupted use in demanding projects. With exceptional durability, these batteries endure the rigors of heavy-duty applications and frequent recharging cycles. Their adaptable shapes cater to various power tool designs, ensuring reliable and customizable power solutions for professionals.

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The Complete Guide For 4400Ah 3.7 V 18650 Li-ion Battery

A 3.7 V 4400Ah 18650 li-ion battery serves as a crucial power source for various electronic devices. This guide delves into its components, functionalities, and best practices for optimal use.

Part 1. Advantages and Applications

The 4400Ah 3.7 V 18650 li-ion battery offers exceptional advantages, primarily its high capacity and voltage. Its versatile applications span numerous industries, including electronics, portable power tools, flashlights, and vaping devices. This versatility showcases its adaptability and reliability across diverse devices and requirements.

Part 2. Technical Specifications

The 4400Ah capacity denotes the battery's charge-holding capability, while the 3.7 V voltage determines its power output. Understanding these specifications aids in selecting the ideal battery for specific device requirements. Discharge rates and compatibility considerations are pivotal technical aspects impacting the battery's performance.

Part 3. Safety and Handling

Safety protocols and best practices when handling the 4400Ah 3.7 V 18650 li-ion battery are crucial. Handling guidelines include avoiding extreme temperatures, preventing overcharging or discharging, and ensuring compatibility with appropriate charging systems. These practices safeguard both the battery and the device it powers.

Part 4. Maintenance and Longevity

Proper charge-discharge cycles, temperature management, and avoiding complete discharges contribute significantly to battery longevity. Firmware updates and software optimizations also play a key role in maximizing battery performance.

Part 5. Buying Guide and Recommendations

For reliable and customized solutions, consider sourcing your 4400Ah 3.7 V 18650 Li-ion Batteries from Ufine custom battery. Our commitment to quality assurance and tailored battery solutions ensures dependable performance for your specific needs.

FAQs

  • Can li-ion 18650 batteries be used in series or parallel configurations for increased capacity or voltage?

    Yes, our li-ion 18650 batteries are designed for easy integration into series or parallel configurations to meet specific power requirements.
  • How does the thermal performance of li-ion 18650 batteries compare to other battery types?

    Li-ion 18650 batteries have efficient thermal management systems, ensuring stable performance even under challenging temperature conditions.
  • Are there any industry certifications or standards met by your li-ion 18650 batteries?

    Our li-ion 18650 batteries comply with industry standards and may have certifications such as UL, CE, or RoHS, depending on the application.
  • How long does it take to fully charge a lithium battery?

    Charging time depends on the battery's capacity and the charger's current. For example, if the battery capacity is 4000mAh and the charger current is 2500mA, charging time = 4000mAh / 2500mA = 1.6 hours.
  • How long do lithium batteries last?

    Our lithium battery cycle life is more than 500 times. The lifespan of a lithium battery depends on various factors, such as usage patterns, charging and discharging conditions, and overall maintenance.
  • Can lithium batteries be customized for specific applications?

    Yes, lithium batteries can be customized to meet specific requirements. This includes customizing the battery capacity, voltage, size, shape, and other parameters to suit the application's needs. Capacity: 20mAh~12000mAh, Voltage: 3.2 V~48 V.

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High Energy Density

It stores large amounts of energy in a smaller and lighter package

Longer Cycle Life

Withstands extensive charge and discharge cycles

Low Self-Discharge

Maintains power longer when not in use

Safety

Minimizes the risk of accidents and ensures safe operation

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