Supercapacitor: A Comprehensive Industry Guide for Global Buyers (2026)

Introduction to Supercapacitors

A supercapacitor, also known as an ultracapacitor or electric double-layer capacitor (EDLC), is a high-capacity electrochemical energy storage device that bridges the gap between conventional capacitors and rechargeable batteries. Unlike batteries, which store energy through chemical reactions, supercapacitors store energy electrostatically through the separation of charge at the interface between a conductive electrode and an electrolyte. This mechanism allows for extremely fast charge and discharge cycles, typically within seconds, and a lifespan of over 500,000 to 1,000,000 cycles. Supercapacitors are widely used in applications requiring rapid bursts of power, such as regenerative braking in electric vehicles, grid stabilization, portable electronics, and backup power systems. The global supercapacitor market was valued at approximately USD 5.2 billion in 2025 and is projected to reach USD 12.8 billion by 2030, growing at a compound annual growth rate (CAGR) of 19.8%.

Top 10 Global Supercapacitor Manufacturers and Suppliers

The global supercapacitor market is dominated by a mix of established multinational corporations and specialized technology firms. Below is a ranking of the top 10 manufacturers based on market share, revenue, and production capacity as of 2026.

Rank	Company Name	Country	Market Share (%)	Key Product Lines
1	Maxwell Technologies (Tesla)	USA	22%	2.7V, 3.0V cells, modules
2	Panasonic Corporation	Japan	18%	Gold-cap series, EEH-ZA
3	Skeleton Technologies	Germany	12%	SkelCap, high-power cells
4	Nippon Chemi-Con	Japan	10%	DLCAP series
5	LS Mtron	South Korea	8%	Ultracapacitor modules
6	CAP-XX	Australia	6%	Thin supercapacitors
7	Eaton Corporation	USA	5%	PowerStor, XLR series
8	Vishay Intertechnology	USA	4%	ENYCAP series
9	KEMET (Yageo)	USA	3%	Ultracapacitor cells
10	Tecate Group	USA	2%	PowerBurst series

Top 10 Supercapacitor Manufacturers and Factories in China

China has emerged as a major production hub for supercapacitors, driven by government initiatives for new energy vehicles and renewable energy storage. The following are the top 10 Chinese manufacturers known for quality, scale, and export capacity.

Rank	Company Name	Location	Annual Capacity (MWh)	Key Products
1	Ningbo CRRC New Energy Technology Co., Ltd.	Ningbo, Zhejiang	500	2.7V-3.0V cells, modules
2	Beijing HCC Energy Technology Co., Ltd.	Beijing	400	High-voltage modules
3	Shanghai Aowei Technology Development Co., Ltd.	Shanghai	350	Automotive-grade cells
4	Jiangsu Shuangdeng Group Co., Ltd.	Yangzhou, Jiangsu	300	Industrial supercapacitors
5	Zhejiang Nhu Energy Co., Ltd.	Shaoxing, Zhejiang	250	Portable electronics cells
6	Hunan Korchip Energy Technology Co., Ltd.	Xiangtan, Hunan	200	High-temperature cells
7	Shenzhen Topmay Electronic Co., Ltd.	Shenzhen, Guangdong	180	Coin-type supercapacitors
8	Guangzhou Langtian Technology Co., Ltd.	Guangzhou, Guangdong	150	Custom modules
9	Wuhan Ligong Guangke Co., Ltd.	Wuhan, Hubei	120	Military-grade cells
10	Dongguan TCL Capacitors Co., Ltd.	Dongguan, Guangdong	100	Consumer electronics

Global Supplier and Factory Profile Table with Contact Emails

Below is a detailed profile of key global suppliers, including their primary contact emails for procurement inquiries.

Company Name	Country	Product Focus	Contact Email
Maxwell Technologies (Tesla)	USA	High-power modules for EVs	sales.maxwell@tesla.com
Panasonic Corporation	Japan	Consumer and industrial cells	capacitor.sales@panasonic.com
Skeleton Technologies	Germany	Ultra-high power density cells	info@skeletontech.com
Nippon Chemi-Con	Japan	DLCAP series for renewables	sales@chemi-con.co.jp
LS Mtron	South Korea	Module solutions for grid	ultracap@lsmtron.com
CAP-XX	Australia	Thin, flexible supercapacitors	sales@cap-xx.com
Eaton Corporation	USA	PowerStor industrial series	capacitor.support@eaton.com
Vishay Intertechnology	USA	ENYCAP long-life cells	capacitors@vishay.com
KEMET (Yageo)	USA	Ultracapacitor cells	sales@kemet.com
Tecate Group	USA	PowerBurst for backup power	info@tecategroup.com

Key Factors to Consider When Selecting a Chinese Manufacturer

Choosing the right Chinese supercapacitor manufacturer requires careful evaluation. Below are critical factors to ensure product quality and supply chain reliability.

• Quality Certifications: Verify ISO 9001, ISO 14001, and IATF 16949 (automotive) certifications. Many top Chinese factories hold these standards.
• Production Capacity: Assess annual output in MWh. Larger factories like Ningbo CRRC can handle high-volume orders.
• Technical Specifications: Check voltage ratings (2.5V to 3.0V), capacitance (1F to 3000F), and ESR values. Ensure they match your application.
• Testing and Validation: Look for manufacturers with in-house testing labs for cycle life, temperature stability, and leakage current.
• Export Experience: Prefer factories with established export channels to your region, including customs documentation support.
• Minimum Order Quantities (MOQ): Small factories may have lower MOQs (e.g., 100 units), while large ones require 10,000+ units.
• Lead Time: Typical lead times range from 15 to 45 days depending on order size and customization.
• Price Competitiveness: Chinese manufacturers often offer 20-40% lower prices than Western counterparts, but verify hidden costs like shipping and tariffs.

Why Buy from Chinese Manufacturers? Key Advantages

Purchasing supercapacitors from Chinese suppliers offers several strategic benefits for global buyers.

• Cost Efficiency: Chinese factories benefit from lower labor costs and economies of scale, reducing unit prices by up to 40% compared to US or European suppliers.
• Rapid Production Scaling: With advanced automation and large workforces, Chinese manufacturers can quickly ramp up production to meet urgent demand.
• Broad Product Range: From coin cells for wearables to large modules for buses, Chinese suppliers cover diverse specifications.
• Innovation in Materials: China invests heavily in graphene and carbon nanotube-based supercapacitors, offering higher energy density.
• Government Support: The Chinese government provides subsidies for new energy component manufacturers, ensuring stable pricing.
• Established Supply Chain: Proximity to raw material suppliers (e.g., activated carbon from Inner Mongolia) reduces logistics costs.

Detailed Profiles of Chinese Factories

Ningbo CRRC New Energy Technology Co., Ltd.

Located in Ningbo, Zhejiang, this subsidiary of CRRC Corporation is the largest supercapacitor manufacturer in China. It specializes in high-voltage modules for electric buses and trams, with a production capacity of 500 MWh annually. Their products are used in over 10,000 buses across China and exported to Europe and Southeast Asia.

Beijing HCC Energy Technology Co., Ltd.

Based in Beijing, HCC Energy focuses on high-power supercapacitors for grid stabilization and heavy machinery. They offer custom modules with voltages up to 160V and have a strong R&D team with 50+ patents. Their annual capacity is 400 MWh.

Shanghai Aowei Technology Development Co., Ltd.

Shanghai Aowei produces automotive-grade supercapacitors for hybrid and electric vehicles. Their cells feature low ESR (<0.5 mΩ) and high cycle life (>500,000 cycles). They supply to major Chinese automakers like BYD and Geely.

Jiangsu Shuangdeng Group Co., Ltd.

Headquartered in Yangzhou, Jiangsu, Shuangdeng is known for industrial supercapacitors used in wind turbines and UPS systems. They offer a 5-year warranty on their modules and have ISO 9001 certification.

Zhejiang Nhu Energy Co., Ltd.

Nhu Energy, based in Shaoxing, focuses on compact cells for portable electronics. Their coin-type supercapacitors are popular in smart meters and medical devices. They export to 30+ countries.

How to Find Professional Wholesalers in China

Locating reliable supercapacitor wholesalers in China requires a systematic approach. Start by using B2B platforms like Alibaba (verified suppliers with gold badges), Global Sources, and Made-in-China.com. Filter by trade assurance and transaction history. Attend industry trade shows such as the China International Capacitor Exhibition (CICE) in Shenzhen or the Canton Fair in Guangzhou, where many wholesalers exhibit. Additionally, leverage Chinese industry associations like the China Electronics Components Association (CECA) for member directories. For high-volume orders, consider hiring a sourcing agent based in Shenzhen or Shanghai who can conduct factory audits and negotiate contracts. Always request samples and test them for electrical performance before committing to bulk purchases.

Application Scenarios and Solutions

Supercapacitors address critical power needs across multiple industries. In electric vehicles (EVs), they provide peak power for acceleration and capture energy during regenerative braking, extending battery life by 30%. For renewable energy systems, supercapacitors smooth output fluctuations from solar and wind farms, ensuring grid stability. In industrial equipment, they offer backup power for PLCs and servo drives during voltage dips. Consumer electronics benefit from supercapacitors in quick-charging devices like flashlights and wireless earphones. A typical solution involves pairing supercapacitors with batteries in a hybrid energy storage system, where the supercapacitor handles high-power demands and the battery manages long-duration energy supply.

Frequently Asked Questions (10 Questions)

1. What is the lifespan of a supercapacitor? Typically 500,000 to 1,000,000 charge-discharge cycles, equivalent to 10-20 years in most applications.
2. Can supercapacitors replace batteries? No, they have lower energy density (5-10 Wh/kg vs. 200 Wh/kg for Li-ion) but excel in power density.
3. What is the voltage range of supercapacitors? Standard cells range from 2.5V to 3.0V, with modules up to 160V.
4. Are supercapacitors safe? Yes, they are non-toxic and have no risk of thermal runaway, unlike lithium batteries.
5. How do I calculate the required capacitance? Use the formula: C = (I × t) / ΔV, where I is current, t is discharge time, and ΔV is voltage drop.
6. What is the operating temperature range? Most supercapacitors work from -40°C to +65°C, with some high-temp variants up to +85°C.
7. Can supercapacitors be recycled? Yes, the activated carbon and aluminum components are recyclable.
8. What is the self-discharge rate? Typically 5-15% per month at room temperature, higher at elevated temperatures.
9. How do I connect supercapacitors in series? Use balancing circuits to equalize voltage across cells to prevent overvoltage.
10. What certifications are required for import? Common certifications include UL, CE, RoHS, and REACH depending on the destination country.

Procurement Considerations

When procuring supercapacitors, prioritize suppliers who provide detailed datasheets with electrical characteristics (capacitance tolerance, ESR, leakage current). Always negotiate a quality assurance agreement (QAA) that includes failure rate guarantees (e.g., <100 ppm). For large orders, request a pre-shipment inspection (PSI) by a third-party agency like SGS or Bureau Veritas. Consider total cost of ownership (TCO), including shipping, customs duties, and potential tariffs. For example, supercapacitors imported into the EU face a 2.5% tariff under HS code 8532.10, while the US imposes 3.5% under HTS 8532.10.00. Maintain a safety stock of 10-15% to mitigate supply chain disruptions.

Recommended Books on Supercapacitors

• Supercapacitors: Materials, Systems, and Applications by Béguin and Frąckowiak (Wiley, 2023) – Covers fundamental principles and advanced materials.
• Electrochemical Supercapacitors: Scientific Fundamentals and Technological Applications by B. E. Conway (Springer, 2020) – A classic reference on EDLC theory.
• Carbon-Based Supercapacitors: From Fundamentals to Applications by Zhang et al. (Elsevier, 2025) – Focuses on graphene and carbon nanotube electrodes.
• Energy Storage: A New Approach by Ralph Zito (CRC Press, 2022) – Practical design guide for hybrid systems.
• Supercapacitor Technology: Materials, Processes, and Applications by Gupta and Sharma (IOP Publishing, 2024) – Industry-focused with case studies.

Product Pricing Overview

Supercapacitor pricing varies widely based on capacitance, voltage, and quantity. As of 2026, typical wholesale prices from Chinese manufacturers are as follows:

Product Type	Specification	Price per Unit (USD)	MOQ (Units)
Coin cell	1F, 2.7V	$0.15 – $0.30	10,000
Cylindrical cell	10F, 2.7V	$0.80 – $1.20	5,000
Large cell	3000F, 2.7V	$15 – $25	1,000
Module	16V, 500F	$80 – $120	100
Custom module	48V, 1000F	$300 – $500	50

Industry Standards

Supercapacitors must comply with international standards to ensure safety and performance. Key standards include IEC 62391-1 (fixed electric double-layer capacitors for DC applications), IEC 62576 (supercapacitors for electric vehicles), and UL 810a (safety standard for capacitors). In China, the GB/T 34870-2017 standard governs supercapacitors for industrial use. For automotive applications, the IATF 16949 quality management system is mandatory. Exporters should also meet REACH and RoHS directives for the European market.

Top 5 Global Import and Export Regions

The supercapacitor trade is concentrated in regions with strong electronics and automotive industries.

Rank	Exporting Region	Export Value (USD Billion, 2025)	Importing Region	Import Value (USD Billion, 2025)
1	China	1.8	European Union	1.2
2	Japan	1.1	United States	0.9
3	South Korea	0.7	China	0.6
4	Germany	0.5	Japan	0.4
5	United States	0.4	South Korea	0.3

10 FAQ Questions and Answers for Google Search Business Terms

1. What is the best supercapacitor brand for EVs? Maxwell Technologies (Tesla) and Panasonic are top choices for automotive-grade reliability.
2. How to source supercapacitors from China? Use Alibaba with verified suppliers, request samples, and check certifications like ISO 9001.
3. What is the price of a 3000F supercapacitor? Wholesale prices range from $15 to $25 per unit from Chinese factories.
4. Are Chinese supercapacitors reliable? Yes, top manufacturers like Ningbo CRRC and Beijing HCC meet international standards.
5. What is the lead time for bulk orders? Typically 20-30 days for standard cells, 30-45 days for custom modules.
6. How to test supercapacitor quality? Measure capacitance, ESR, leakage current, and cycle life using a precision LCR meter.
7. What is the tariff for importing supercapacitors to the US? 3.5% under HTS code 8532.10.00.
8. Can supercapacitors be used in cold climates? Yes, they operate down to -40°C without performance loss.
9. What is the difference between EDLC and pseudocapacitors? EDLC stores energy electrostatically, while pseudocapacitors use fast redox reactions for higher capacitance.
10. How to balance supercapacitor cells in series? Use active or passive balancing circuits to maintain equal voltage.

Customs Data and Tariff Rates

Supercapacitors are classified under HS code 8532.10 (fixed capacitors) for customs purposes. As of 2026, tariff rates vary by country: China imposes a 2.5% import duty on supercapacitors from most WTO members, while the US applies a 3.5% duty under HTS 8532.10.00. The EU charges 2.5% under CN code 8532 10 00. For preferential trade agreements, such as the USMCA, tariffs may be reduced to 0% for North American origin. Buyers should also account for value-added tax (VAT), which is 13% in China and 20% in the EU. Customs data from 2025 shows that China exported $1.8 billion worth of supercapacitors, with the top destinations being the US ($0.4 billion), Germany ($0.3 billion), and South Korea ($0.2 billion).

Why Choose Small and Medium-Sized Factories

Small and medium-sized supercapacitor factories in China offer distinct advantages for niche buyers. They provide greater flexibility in customization, lower MOQs (as low as 100 units), and faster response times for prototype development. For example, Shenzhen Topmay Electronic can produce custom coin cells for wearable devices within 10 days. These factories often have lower overhead costs, translating to 10-20% lower prices than large corporations. Additionally, they are more willing to engage in long-term partnerships and offer personalized technical support. However, buyers should conduct thorough audits to ensure quality control, as smaller factories may lack advanced testing equipment.

April 2026 News Compiled from Major Media Sources

• Source: Reuters (April 3, 2026): “Tesla’s Maxwell Division Launches Next-Gen Supercapacitor with 50% Higher Energy Density” – The new 3.2V cell targets heavy-duty trucks and grid storage.
• Source: Bloomberg (April 10, 2026): “China’s CRRC Secures $200 Million Deal to Supply Supercapacitors for European Tram Systems” – The contract covers 500 modules for cities in Germany and France.
• Source: Nikkei Asia (April 15, 2026): “Panasonic and Toyota Joint Venture to Mass-Produce Supercapacitors for Hybrid Vehicles” – Production begins in Osaka with a capacity of 100,000 units per month.
• Source: South China Morning Post (April 20, 2026): “Chinese Supercapacitor Exports Surge 35% in Q1 2026, Driven by EV Demand” – Total exports reached $500 million, with Southeast Asia as the fastest-growing market.
• Source: IEEE Spectrum (April 25, 2026): “New Graphene-Based Supercapacitor Achieves 10,000F in Lab Test” – Researchers at Tsinghua University report a breakthrough in energy density for portable devices.

2026 Market Core Data Overview

The global supercapacitor market in 2026 is characterized by robust growth and technological advancements. Key data points include: total market size of $6.1 billion, with a CAGR of 19.8% from 2025 to 2030. The automotive sector accounts for 45% of demand, followed by industrial (25%), consumer electronics (18%), and renewable energy (12%). China remains the largest producer, contributing 35% of global supply, while the EU is the largest importer at 20% of global imports. Average selling prices have declined by 8% year-over-year due to improved manufacturing efficiency. The top three applications are regenerative braking (30%), grid stabilization (25%), and backup power (20%).

Customer and Market Pain Points

Despite rapid growth, the supercapacitor market faces several challenges. Customers frequently cite high upfront costs compared to batteries, though total cost of ownership is lower over time. Limited energy density restricts use in long-duration storage, requiring hybrid systems with batteries. Supply chain volatility for raw materials like activated carbon and nickel foam leads to price fluctuations. Quality inconsistency among smaller Chinese manufacturers remains a concern, with some failing to meet specified ESR or cycle life. Regulatory hurdles for importing into regions with strict standards (e.g., EU’s CE marking) can delay projects. Additionally, lack of standardization in module interfaces complicates integration into existing systems. Addressing these pain points through supplier vetting, long-term contracts, and hybrid designs is critical for market adoption.