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Premium 18650 & Lithium Battery Solutions

Unitech Energy System Limited – Trusted manufacturer of high-performance 18650 battery packs, lithium polymer batteries, and LiFePO4 solutions since 2009. Custom OEM/ODM designs for industrial, medical, and consumer applications.

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Who We Are

Unitech Energy System Limited was established in 2009, specializing in the design, research, manufacture, and distribution of high-performance and environmentally friendly lithium-ion batteries.

With over 15 years of experience, we deliver reliable, safe, and long-lasting battery solutions to clients worldwide. Our focus on innovation, quality control, and customer satisfaction has made us a trusted partner in the energy storage industry.

  • OEM & ODM Custom Battery Packs
  • ISO & IEC62133 Certified Manufacturing
  • 2000+ Cycle Life LiFePO4 Options
  • Global Shipping & Fast Turnaround
Custom 18650 Battery Pack Lithium Polymer Battery Samsung 18650 Battery Polymer Battery PL703450

Our Premium Battery Products

Explore our wide range of 18650 battery packs, lithium polymer batteries, and LiFePO4 solutions engineered for performance, safety, and longevity.

111Wh 3.7V Rechargeable Battery Pack

111Wh 3.7V Rechargeable Battery Pack

  • Voltage: 3.65V
  • Capacity: 6040mAh
  • Cell Type: Li-ion Lithium Battery
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Samsung 18650 Lithium Battery

Samsung 18650 3.6V 2200mAh

  • Voltage: 3.6V
  • Capacity: 2200mAh
  • Cell Type: Samsung SDI Lithium Battery
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24V 18650 Battery Pack

24V 2600mAh 18650 Battery Pack

  • Voltage: 24V
  • Capacity: 2600mAh
  • Cell Type: Rechargeable Li-ion
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Samsung SDI 18650 Battery

Samsung SDI 3.7V 2600mAh 18650

  • Voltage: 3.7V
  • Capacity: 2600mAh
  • Cell Type: ICR18650-26JM
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PL703450 3000mAh Polymer Battery

Polymer Battery PL703450 3000mAh

  • Voltage: 3.7V
  • Capacity: 3000mAh
  • Cell Type: Lithium Ion Polymer
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PL401030 90mAh Li-Polymer Battery

PL401030 90mAh 3.7V Li-Polymer

  • Voltage: 3.7V
  • Capacity: 90mAh
  • Cell Type: Lithium Polymer
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Custom 18650 Battery Pack

OEM ODM 11.1V 12000mAh 18650

  • Voltage: 11.1V
  • Capacity: 12000mAh
  • Energy: 133.2Wh
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Electric Scooter 60V 20Ah Battery

Electric Scooter 1200Wh 60V 20Ah

  • Voltage: 60V
  • Capacity: 20Ah
  • Energy: 1200Wh
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14.8V 6.6Ah 18650 Battery Pack

14.8V 6.6Ah 18650 Rechargeable

  • Voltage: 14.8V
  • Capacity: 6.6Ah
  • Cell Type: 18650 Li-ion
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7.4V 2S 1500mAh Li-Polymer Pack

7.4V 2S 1500mAh Li-Polymer Pack

  • Voltage: 7.4V
  • Capacity: 1500mAh
  • Energy: 11.1Wh
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29.6V 7Ah 18650 Cell Pack

29.6V 7Ah 18650 Cell Pack

  • Voltage: 29.6V
  • Capacity: 7Ah
  • Application: Industrial Equipment
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Rechargeable 11.1V 5200mAh Lithium Pack

Rechargeable 11.1V 5200mAh Lithium Pack

  • Voltage: 11.1V
  • Capacity: 5200mAh
  • Cell Type: Panasonic Li-ion
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Why Choose 18650batt.com?

Engineered for reliability, safety, and performance across industries.

Quality Assurance

Every battery undergoes rigorous testing for safety, cycle life, and performance. Certified to IEC62133, UN38.3, and MSDS standards.

Custom OEM/ODM Solutions

Tailor-made battery packs for medical devices, robotics, scooters, and industrial equipment. Full design and prototyping support.

Global Supply Chain

Fast delivery worldwide from our China-based factory. Trusted by clients in North America, Europe, and Asia.

2009
Founded
15+
Years Experience
800+
Products
50+
Countries Served

Frequently Asked Questions

What types of batteries do you manufacture?

We specialize in 18650 battery packs, lithium polymer (LiPo) batteries, LiFePO4 battery packs, 12V/24V/48V lithium-ion systems, and custom OEM/ODM solutions.

Can you customize battery packs?

Yes, we offer full customization including voltage, capacity, dimensions, connectors, and protection circuits (PCM/BMS) for your specific application.

Are your batteries certified?

Yes, our batteries comply with IEC62133, UN38.3, MSDS, and ROHS standards. Certifications available upon request.

What is the lead time for custom orders?

Typical lead time is 15–25 days after sample approval, depending on order size and complexity.

Do you offer samples?

Yes, we provide samples for evaluation. Contact us with your specifications to request a sample quote.

Get in Touch

For quotes, samples, or technical support, visit our official website to connect with our team.

Visit Official Website to Contact

Business Phone: 86-755-23449331 (Working time), 86-18128561764 (Non-working time)

Fax: 86-755-23449332

Email: [email protected]

Work Hours: 8:30–18:00 (Beijing Time)

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