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Powering the Future with High-Performance Supercapacitors

BIGCAP is a trusted leader in supercapacitor innovation since 2013, delivering reliable energy storage solutions for smart meters, renewable energy, electric vehicles, and industrial applications worldwide.

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2013
Founded

Pioneering supercapacitor innovation for over a decade.

200+
Employees

Dedicated team driving engineering excellence.

12,000m²
Factory Area

State-of-the-art manufacturing facility in China.

About BIGCAP

BIGCAP is a leading company in China specializing in crafting high-performance supercapacitors that offer rapid charging, high energy density, and long-lasting durability. Since 2013, we have been at the forefront of energy storage innovation, serving industries such as smart metering, renewable energy, electric vehicles, and rail transit.

  • Mass production for overseas electricity meters since 2013
  • Developed State Grid Coin Type supercapacitor in 2016
  • Rated as 'Top 100 Companies to Work For in China' in 2018
  • Developed State Grid 2.0 Series supercapacitor in 2019
Discover Our Journey
BIGCAP Factory

Our Products

Explore our comprehensive range of supercapacitors engineered for reliability, longevity, and high performance across industrial and commercial applications.

5.5V Coin Cell Supercapacitor

5.5V Coin Cell Supercapacitor

Low ESR, cycle life over 500,000, REACH/ROHS compliant. Ideal for power backup and energy storage.

  • ✔ Low ESR
  • ✔ -25°C to +70°C operating range
  • ✔ 500,000+ cycle life
  • ✔ REACH/ROHS compliant
Lithium-ion 3.8V Series

Lithium-ion 3.8V Series

High capacity, ultra-low self-discharge, 500,000 cycle life. Ideal for long-term energy storage.

  • ✔ 500,000 cycle life
  • ✔ Low ESR
  • ✔ High current capability
  • ✔ ROHS compliant
Radial Type 3.0V

3.0V Radial Type Supercapacitor

Low ESR, durable design, ideal for high-reliability industrial systems.

  • ✔ Low ESR
  • ✔ Robust physical design
  • ✔ Safety compliant
  • ✔ Application-specific features
High-Temp Coin Cell

3.6V High-Temp Coin Cell

Stable circular design, low leakage, ideal for clock chip data retention.

  • ✔ -25°C to +85°C range
  • ✔ Low leakage current
  • ✔ ROHS compliant
  • ✔ Long cycle life
Winding Type Snap-In

Winding Type Snap-In Supercapacitor

Low internal resistance, up to 1 million charge cycles, ultra-low leakage.

  • ✔ 1 million+ cycles
  • ✔ Low internal resistance
  • ✔ ROHS compliant
  • ✔ High power density
Radial Wire Winding Type

Radial Wire Winding Type

Cylindrical structure, ultra-long service life, millions of charge/discharge cycles.

  • ✔ Millions of cycles
  • ✔ Cylindrical design
  • ✔ Long service life
  • ✔ High reliability
BIGCAP Fully Sealed 5.5V 1.5F

BIGCAP® Fully Sealed 5.5V 1.5F

State Grid Winding Combination Series. Extreme temp operation (-40°C to +85°C).

  • ✔ -40°C to +85°C range
  • ✔ Ultra-low leakage
  • ✔ REACH/ROHS compliant
  • ✔ Industrial-grade durability
Hybrid Supercapacitor Precision Potting

Hybrid Supercapacitor Precision Potting

Low internal resistance, high power discharge, 500,000+ cycle life.

  • ✔ 500,000+ cycles
  • ✔ Low ESR
  • ✔ High power discharge
  • ✔ ROHS compliant
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Why Choose BIGCAP?

Our supercapacitors are engineered for performance, reliability, and compliance with global standards.

Rapid Charging

Engineered for fast charge and discharge cycles, ideal for burst power applications.

Long Lifespan

Up to 1 million charge/discharge cycles with minimal degradation.

High Energy Density

Compact design with superior energy storage per unit volume.

Global Compliance

REACH and ROHS compliant, free of Cd, Pb, and other pollutants.

Applications

Our supercapacitors power critical systems across multiple industries.

Smart Meters

Reliable backup power for data retention and timekeeping.

Wind & Solar Power

Energy storage for renewable systems with fluctuating supply.

Microgrid Systems

Stabilize voltage and support load balancing.

Electric Vehicles

Regenerative braking and burst power delivery.

Rail Transit

Emergency power and door actuation systems.

Industrial Automation

Uninterruptible power for PLCs and control systems.

Get in Touch

For inquiries, samples, or technical support, visit the official BIGCAP website to connect with our team.

Visit Official Website to Contact

Email: [email protected]

Phone: +86-15640476729

Address: High-Tech Industrial Park Phase2 No.3, Chaoyang City, Liaoning Province, China

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