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  3. アイオクサスジャパン株式会社 (旧社名 株式会社パワーシステム)
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アイオクサスジャパン株式会社 (旧社名 株式会社パワーシステム)

Establishment1987 year
capital10000Ten thousand
number of employees20
addressShiga/Kusatsu-shi/1381-1 Okamoto-cho
phone077-569-5106
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last updated:Dec 09, 2025
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  • Products/Services(26)
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アイオクサスジャパン株式会社 Company Overview

We are a top manufacturer of electric double-layer capacitors (EDLC) that are rapidly increasing in demand worldwide! We also offer high-performance batteries from XSP.

Ioxus is a comprehensive energy storage device manufacturer that handles everything from capacitors to batteries. Starting as a top manufacturer of electric double-layer capacitors (EDLC), since its establishment in North America in 2007, it has advanced the development and mass production of EDLCs, raising output density and energy density to the highest levels in the industry. As the only manufacturer in the industry to mass-produce cylindrical (iCAP) cells and pouch (THiNCAP) cells, we offer a wide range of products tailored to our customers' needs. EDLCs are safe energy storage devices with rapid charge/discharge characteristics and ultra-long lifespan properties. Leveraging unique features not found in other energy storage devices, Ioxus has provided solutions for a wide range of applications, including UPS, AGV transport, hybrid buses, peak-cut power supplies, and jump starters. In recent years, we have also been adopted in new markets such as renewable energy, grids, and nuclear fusion. Ioxus will continue to develop its unique technology protected by IP, providing more user-friendly and high-performance products to the market. Since 2020, we have started supplying high-performance batteries manufactured by XSP, including AGM lead batteries and lithium-ion batteries.

Business Activities

Ioxus has design and mass production facilities for electric double-layer capacitors (EDLC) in North America, offering a wide range of products with the highest quality standards to solve customer problems. Ioxus's EDLC utilizes uniquely designed electrodes to achieve the highest level of power density.

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Products/Services (26)

Power Revolution for Forklifts in Logistics! product image
Power Revolution for Forklifts in Logistics!
Power revolution for heavy machinery/construction equipment in the construction industry! product image
Power revolution for heavy machinery/construction equipment in the construction industry!
Electric Double Layer Capacitor (EDLC) for Agriculture product image
Electric Double Layer Capacitor (EDLC) for Agriculture
EDLC Accelerating Cordless Technology for Home Appliances product image
EDLC Accelerating Cordless Technology for Home Appliances

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catalog(19)

Survey responses are required to view e-book details. Click to view the e-book.

Engine Start Device "KSM"

Engine Start Device "KSM"

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Super Capacitor Jump Starter "Mini HD"

Super Capacitor Jump Starter "Mini HD"

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Jump-Start Carts 「 KBI Kranking KART Jr」

Jump-Start Carts 「 KBI Kranking KART Jr」

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Super Capacitor Mini HD Jump Starter

Super Capacitor Mini HD Jump Starter

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news(4)

25th SMART ENERGY WEEK [Spring]

  • SEMINAR_EVENT

Our company will be exhibiting at "BATTERY JAPAN 2026," which will be held at Tokyo Big Sight for three days from March 17 (Tuesday) to March 19 (Thursday), 2026. <BATTERY JAPAN 2026> Dates: March 17 (Tuesday) to March 19 (Thursday), 2026, 10:00 AM to 5:00 PM Venue: Tokyo Big Sight, South Hall 4 Booth Number: S24-13 At this exhibition, we will showcase the following products from our company: - EDLC Modules (Standard type, Heat dissipation type, Type with fan) - EDLC Application Products (Jump starters, Hybrid [EDLC + Lithium-ion battery integrated]) - Battery Products (AGM, Lithium-ion) Additionally, we will display a demonstration unit that combines a small press machine with EDLC, allowing you to understand the effectiveness of EDLC usage. We sincerely apologize for the inconvenience during your busy schedule, but we humbly invite you to visit us at this opportunity.

Jan 13, 2026

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IPROS10768673775068827014.png

【NEW】Electric double-layer capacitor 'High Power' type, high output with compact 118V energy storage module!

  • PRODUCT

The electric double-layer capacitor "High Power" is a compact 118V energy storage module. It smooths out sharp voltage fluctuations through instantaneous charging and discharging. This product boasts a long lifespan and high reliability with a durability of over 1 million cycles. It can be utilized for peak-cut power supplies for MRI and energy regeneration, among other applications. 【Features】 ■ Long lifespan and high reliability energy storage module ■ Compact 118V type ■ Smooths out sharp voltage fluctuations through instantaneous charging and discharging ■ Durability of over 1 million cycles

Aug 25, 2023

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What is an electric double-layer capacitor? A comprehensive guide to capacitors presented in one book!

  • CATALOG

A storage device refers to a device or system that can store electrical power, such as batteries or capacitors, and release it after a certain period of time. This document is a collection of basic knowledge explaining electric double-layer capacitors, covering their effects and principles, comparisons with other storage devices like batteries, and applications of large-capacity capacitors. It is a resource that provides foundational knowledge about capacitors that you may have been hesitant to ask about, so please feel free to contact us. [Contents (excerpt)] ■ What is an electric double-layer capacitor (EDLC)? ■ Principles and characteristics of electric double-layer capacitors ■ Comparison with other storage devices, etc. *For more details, please refer to the PDF document or feel free to contact us.

Aug 24, 2023

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Detailed information

Company name アイオクサスジャパン株式会社 (旧社名 株式会社パワーシステム)
number of employees20
Contact addresspostalcode 525-0044 Shiga/ Kusatsu-shi/ 1381-1 Okamoto-choView on map TEL:077-569-5106 FAX:077-569-5168
Key PartnersGE Healthcare Japan, Inc. and Toshiba Mitsubishi Electric Industrial Systems Corporation.
Business LocationsClick here for the list
Industry Energy
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Please note that the English text on this page is automatically translated and may contain inaccuracies.