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Custom 18650 Lithium Battery Manufacturer in China

18650 Lithium Battery

Custom 18650 Lithium Battery Manufacturer in China

18650 lithium battery is a cylindrical lithium-ion battery, which has a diameter of 18mm and a length of 65mm. The nominal voltage is usually 3.6-3.7V, the full charge voltage is 4.2V, discharge voltage is 2.5V-3.0V. The capacity range is 1200mAh-3600mAh. With the advantages of high energy density, long range, safety, and stability, it is commonly used in high energy consumption scenarios, such as electric vehicles, power tools, energy storage devices, and so on.

VTCBATT is a professional 18650 lithium battery manufacturer in China. Our 18650 lithium battery adopts an intelligent positive protection circuit, nickel-plated stainless steel case, and MOS-FET module, which passed UL1642, UL1642, IEC62133, UN, ISO 9001, UL, CE, RoHS, etc. Our 18650 lithium batteries have good safety, excellent shock resistance, and efficient and stable output. We have more than 20 years of OEM and ODM design and production experience. Just tell us what you need, and we can create customized solutions for you. Hurry up and contact us to get a quote!

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Advantages of Our 18650 Lithium Battery

Multiple Safety Protection
Multiple Safety Protection

Our 18650 lithium battery has a built-in intelligent protection chip and pressure relief device that can automatically prevent overcharging, deep discharge, and short circuit risk. When the internal pressure is abnormal, the pressure relief valve will quickly release the gas to avoid the risk of explosion. Its outer shell is made of thickened metal, which is drop-proof and anti-collision. It also improves the conductivity. Together with the temperature sensing element and high-efficiency control module, it can adjust the current strength in real time to ensure a stable power supply of the device in various usage scenarios.

High-quality Production Process
High-quality Production Process

Our 18650 lithium battery adopts special alloy welding technology and multi-layer structure reinforcement, which makes the battery with excellent anti-voltage fluctuation ability. It can still maintain stable performance even under long-term high-power output conditions. Rigorous tests have shown that it can still retain more than 70% of its power after 1,000 complete charge/discharge cycles, and the fast charging technology can also shorten the charging time by nearly one-third.

Long Battery Life
Long Battery Life

Our 18650 lithium battery utilizes high-density energy storage technology to achieve a maximum capacity of 3500mAh in a single cell. This energy reserve can support the continuous operation of a powerful searchlight for more than 12 hours or meet the power needs of a drone in continuous flight, making it especially suitable for outdoor devices that require long-lasting power.

High Performance Discharge Characteristics
High Performance Discharge Characteristics

Our 18650 lithium battery supports 15 amps of continuous current output and 30 amps of instantaneous burst power, which can be adapted to high-load scenarios such as power tool start-up operations or instantaneous heating of e-cigarette atomizers. With its internal low-resistance design, the energy conversion efficiency is 7.4% higher than conventional products, and it can still maintain a stable voltage output under a 15-amp load.

Economical and Environmentally Friendly
Economical and Environmentally Friendly

Our 18650 lithium battery utilizes the QSP and Mn processes to maintain 80% capacity after 500 cycles, reducing long-term usage costs by 40% compared to conventional batteries. The rechargeable feature reduces battery waste by over 90%. A single battery can replace hundreds of disposable batteries, significantly reducing the burden on the environment.

Standardized Manufacturing and Quality Certification
Standardized Manufacturing and Quality Certification

Our 18650 lithium battery has passed UL1642, IEC62133, RoHS safety certification, CE, KC, BIS market access certification, and ISO9001 quality management certification. Each of our batteries undergoes eight rigorous tests, including voltage accuracy, cycle life, and temperature extremes, before leaving the factory to ensure that the performance parameters fully meet the standards.

Compatibility and Ease of Assembly
Compatibility and Ease of Assembly

In terms of compatibility design, our 18650 lithium battery adopts a standardized flat-top structure and pre-set soldering point design, which makes it easy for users to assemble the battery pack by themselves. It can be adapted to most of the 18650 specification devices on the market, from ordinary rechargeable batteries to professional medical equipment, all of which can be installed and used instantly.

Diversified Application Scenarios
Diversified Application Scenarios

Our 18650 lithium batteries can be used in a wide range of applications in both the lifestyle and industrial sectors. They can be used to power high-power tools such as drills and cutting machines, as well as precision medical equipment such as defibrillators. The cold and heat-resistant features make it work well in -40 degrees Celsius environments or 60 degrees Celsius temperature workshops, which are suitable for special scenarios such as outdoor adventure equipment, polar research equipment, and so on.

Automatic 18650 Cells Production Line

In a clean, dust-free modern workshop with 45% humidity, 10 automatic 18650 cell production lines operate 24 hours a day without interruption to improve production capacity and energy efficiency. As the most widely used standard size, all materials—such as electrodes, electrolytes, and separators—are fully matured in the entire production process to ensure maximum reliability, stability, and safety of the batteries.

Automatic 18650 Cells Production Line

Wide Applications of Our 18650 Lithium Battery

  • Consumer Electronic Devices
    Consumer Electronic Devices

    Large-capacity Fast-charging Mobile Power: equipped with 20000-30000mAh large capacity, using 45W fast charging protocol, can simultaneously power the laptop and cell phone, a single full charge can support the needs of business people around the clock, mobile office, and cell phone can be charged 3-5 times.

    High-performance e-cigarette Kit: designed for 0.1-0.3Ω ultra-low resistance atomizers, supporting more than 15A continuous discharge capacity, instant 100W power burst, to ensure that the smoke oil is fully atomized, bringing a dense taste.

    All-weather strong light illumination device: equipped with a 3500mAh high-energy battery core, it can still maintain 1000 lumens of strong light output under extreme cold or high temperature environments, and work continuously for 1 hour, to meet the needs of special scenarios such as outdoor search and rescue.

    Long-lasting Laptop Battery Pack: designed with a modularized structure, a single charge can support the ultra-thin notebook to work continuously for 8-12 hours, and still maintain more than 80% capacity after 500 times of charging and discharging, which is suitable for business people who travel frequently.

  • Electric Transportation
    Electric Transportation

    Micro EV Power Pack: A power module consisting of thousands of batteries with a peak power of 30kW, providing a 50km range for low-speed electric vehicles to meet the needs of short-distance commuting in the community.

    Intelligent Electric Skateboard System: adopts a 10-series and 4-parallel battery structure, drives a 1000W brushless motor, maximum speed of 25km/h, full charge range of 65km, suitable for urban short-distance transportation.

  • Industrial-grade Power Tools
    Industrial-grade Power Tools

    Heavy-duty Power Drill Power Core: 4-6 parallel high-multiplier battery packs, can produce 60Nm super torque, continuous drilling of 200 holes in a concrete wall without decay, efficiency is 3 times higher than traditional tools.

    Power Supply for Industrial Cutting Equipment: supports 30A pulse discharge mode, drives a 2000W cutting motor, can continuously cut off a 5mm thick steel plate, suitable for high-intensity operation in a metal processing workshop.

    All-weather Logistics Power Supply System: consists of 50-100 batteries in an intelligent module, supports 24-hour uninterrupted operation of AGV trucks, and the capacity retention rate is still over 75% after 2000 cycles.

  • Energy Storage System
    Energy Storage System

    Home Energy Storage Solution: 100+ batteries form a 5kWh energy storage unit, which, together with a 2000W inverter, can drive a refrigerator, air conditioner, and lighting system for 6 hours, with less than 8% charging and discharging loss.

    Off-grid Lighting Power Supply Unit: solar street light system with built-in dual-battery configuration can still maintain 8 hours of lighting per night under 3 consecutive days of cloudy and rainy weather, which is especially suitable for remote areas.

    Data Center Emergency Power Supply: A 10kVA class backup system composed of over a thousand batteries can take over the utility power interruption within 8 milliseconds to maintain server emergency operation for 15 minutes to prevent data loss.

18650 Battery Technical Parameters

Li-ion Cylindrical Cell Technical Specifications (VTC Series)

ModelBattery MaterialNominal Voltage (V)Nominal Capacity (Ah)Life CyclesMaximum Charge VoltageCut-off Discharge VoltageMeasurement (Φ*H)
VTC-32600CLi-ion3.7V5500≥10004.2V2.75V32.5*60.2
VTC-26650CLi-ion3.7V5000≥10004.2V2.75V26.3*65.2
VTC-26650CLi-ion3.7V4500≥10004.2V2.75V26.3*65.2
VTC-21700CLi-ion3.7V4200≥10004.2V2.75V21.5*70.2
VTC-18650CLi-ion3.7V2600≥10004.2V2.75V18.5*65.2
VTC-18650CLi-ion3.7V2400≥10004.2V2.75V18.5*65.2
VTC-18650CLi-ion3.7V2200≥10004.2V2.75V18.5*65.2
VTC-18650CLi-ion3.7V2000≥10004.2V2.75V18.5*65.2
VTC-18650CLi-ion3.7V1800≥10004.2V2.75V18.5*65.2
VTC-18650CLi-ion3.7V1500≥10004.2V2.75V18.5*65.2
VTC-18500CLi-ion3.7V1900≥10004.2V2.75V18.3*50.2
VTC-14650CLi-ion3.7V1000≥10004.2V2.75V14.2*65.2
VTC-14500CLi-ion3.7V800≥10004.2V2.75V14.2*50.2
VTC-14500CLi-ion3.7V700≥10004.2V2.75V14.2*50.2
VTC-14500CLi-ion3.7V650≥10004.2V2.75V14.2*50.2
VTC-14430CLi-ion3.7V650≥10004.2V2.75V14.2*43.0
VTC-14300CLi-ion3.7V600≥10004.2V2.75V14.2*30.0
VTC-14280CLi-ion3.7V320≥10004.2V2.75V14.2*28.0
VTC-10870CLi-ion3.7V750≥10004.2V2.75V10.3*87.0
VTC-10840CLi-ion3.7V600≥10004.2V2.75V10.3*84.0
VTC-10440CLi-ion3.7V330≥10004.2V2.75V10.3*44.0
VTC-10380CLi-ion3.7V250≥10004.2V2.75V10.3*38.0
VTC-10280CLi-ion3.7V160≥10004.2V2.75V10.3*18.0
VTC-10180CLi-ion3.7V100≥10004.2V2.75V10.3*18.0
VTC-10150CLi-ion3.7V80≥10004.2V2.75V10.3*15.0
VTC-21700MPLi-ion3.7V4000≥10004.2V2.75V21.3*70.0
VTC-18650MPLi-ion3.7V2500≥10004.2V2.75V18.5*65.2
VTC-18650MPLi-ion3.7V2000≥10004.2V2.75V18.5*65.2
VTC-26650HPLi-ion3.7V3400≥10004.2V2.75V26.5*65.2
VTC-21700HPLi-ion3.7V3500≥10004.2V2.75V21.5*70.0
VTC-18650HPLi-ion3.7V2500≥10004.2V2.75V18.5*65.2
VTC-18350HPLi-ion3.7V700≥10004.2V2.75V18.3*35.0
VTC-16650HPLi-ion3.7V800≥10004.2V2.75V16.8*50.2
VTC-16340HPLi-ion3.7V600≥10004.2V2.75V16.8*34.0
VTC-14650HPLi-ion3.7V900≥10004.2V2.75V14.2*65.2
VTC-14500HPLi-ion3.7V650≥10004.2V2.75V14.2*50.2
VTC-18650TLi-ion3.7V2000≥10004.2V2.75V18.3*65.2
VTC-14500TLi-ion3.7V600≥10004.2V2.75V14.2*50.2
VTC-14250TLi-ion3.7V250≥10004.2V2.75V14.2*25.0
VTC-18650LLi-ion3.7V2600≥10004.2V2.75V18.0*65.2
VTC-18650LPLi-ion3.7V2500≥10004.2V2.75V18.0*65.2

Battery Specifications – Low Temperature Discharge (−40℃)

ModelTypical Capacity (mAh)Typical Capacity (Ah)Charge RateMax Discharge Rate
VTC18650-32HP32003.21C3C
VTC18650-34MP33503.351C3C
VTC18650-35HP35003.51C3C
VTC18650-38MP38003.81C3C
VTC18650-40MP400041C3C
VTC26650-70HP700071C3C

Battery Specifications – Low Temperature Charge & Discharge (−20℃ Chg, −40℃ Dis)

ModelTypical Capacity (mAh)Typical Capacity (Ah)Charge RateMax Discharge Rate
VTC18650-22SPA22002.21C5C
VTC18650-34LP33503.351C3C

Battery Specifications – Super Power

ModelTypical Capacity (mAh)Typical Capacity (Ah)Charge RateMax Discharge Rate
VTC18650-25SP25002.51.5C10C
VTC18650-30SP300031C5C

Battery Specifications – High Capacity

ModelTypical Capacity (mAh)Typical Capacity (Ah)Charge RateMax Discharge Rate
VTC18650-26HPA26002.60.5C5C
VTC18650-30MP300030.5C3C
VTC18650-32HP32003.21C6C
VTC18650-34MP33503.351C3C
VTC18650-35HP35003.51C6C
VTC18650-38MP38003.81C3C
VTC18650-40MP400041C3C
VTC26650-50ME500051C4C
VTC26650-70HP700071C3C
What is a 18650 lithium battery?

18650 lithium battery is a kind of cylindrical rechargeable battery. 18 means the diameter of 18 millimeters, 65 means the length of 65 millimeters, and 0 means the shape is cylindrical. It is commonly used in laptops, flashlights, electronic devices,medical equipment,solar tracker and other devices.

What are the types of 18650 lithium batteries?

According to the protection function, it can be divided into batteries with a protection plate and without a protection plate.

According to the material, it can be divided into a lithium ternary battery and lithium iron phosphate battery. Lithium ternary batteries are more common, and lithium iron phosphate batteries are safer.

The capacity can be divided into ordinary capacity batteries and high capacity batteries.

Is a 18650 lithium battery the same as an AA battery?

No. The size of a 18650 lithium battery is bigger than an AA battery. The diameter of an AA battery is 14mm, and the length is 50mm. The voltage of a 18650 lithium battery is 3.6V-3.7V, and the voltage of an AA battery is 1.2V-1.5V. 18650 is more suitable for high power devices such as flashlights, power tools, etc., and AA battery is mostly used in remote control, electric tools, etc.. AA batteries are mostly used for low-power devices like remote controls and clocks.

Can I use an AA battery charger to charge a 18650 lithium battery?

No. The voltage of an AA charger is much lower than the 3.7V required by 18650, which may lead to battery damage or fire if used forcibly. Therefore, a 18650 lithium battery must be charged with a special lithium-ion battery charger.

What are the advantages of a 18650 lithium battery?

The 18650 lithium battery has a long range, long service life, high output current, and good environmental benefits.

       
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