From March 17 to 19, 2026, the highly anticipated BATTERY JAPAN exhibition opened its doors in Tokyo. Gathering cutting-edge technologies and innovative concepts, this year's event aimed to drive the comprehensive realization of a green, circular lifestyle by building a sustainable energy ecosystem.

Amidst this grand showcase of technology and environmental protection, MARSTEK made a powerful appearance with its core philosophy of "Smart, Long-lasting, and Portable," demonstrating to the world its profound expertise in the new energy storage sector.

Closely aligning with the exhibition's core vision of a "green cycle," MARSTEK focused its showcase on a series of rechargeable standard batteries designed to end disposable battery pollution, alongside a diverse matrix of mobile energy storage products. Through the innovation of micro-level products, MARSTEK is actively driving the practical application of a new macro-energy paradigm for the future.

At the exhibition, MARSTEK highlighted three major portable and sustainable energy innovations:

Ending Disposable Pollution: USB-C Rechargeable AA & AAA Lithium Batteries

Targeting the pain points of traditional NiMH batteries, MARSTEK introduced its new line of USB-C rechargeable AA and AAA lithium batteries.

• Core Advantages: Features a stable 1.5V voltage output, an impressive 1,500 charge cycles, and ultra-large capacity.

• Intuitive Charging: Built-in USB-C direct charging ports paired with intuitive indicator lights make the charging status clear at a glance.

• Dual Safety Protection: Utilizes a high-energy safe cell formula combined with a smart BMS (Battery Management System) for double the electrical safety.

• Consistent & Eco-Friendly: The stable output voltage ensures devices run efficiently from full to low charge. Remarkably, the batteries retain 80% of their charge even after 3 years of storage. This line perfectly balances extreme practicality with immense environmental value by significantly reducing the waste pollution caused by disposable batteries.

Built for the Wild: P326D/P327D Waterproof Power Banks

Deeply customized for outdoor scenarios, the MARSTEK P326D and P327D are robust power solutions built to withstand the elements.

• Extreme Waterproofing: Achieves an IPX7 waterproof certification, providing complete protection even when fully submerged in water.

• Smart Display: Equipped with a high-definition TFT screen that displays real-time battery status.

• High-Power Output: Delivers a powerful 65W output, effortlessly meeting the fast-charging needs of smartphones, tablets, and laptops.

• Travel-Ready: Having passed rigorous security standards, these power banks are airline-approved and can be carried directly onto flights, providing reliable and stable power support for business trips and outdoor adventures alike.

Ultimate Safety & Longevity: P333D & P334D LiFePO4 Power Banks

Another major highlight of the exhibition was the MARSTEK P333D & P334D mobile power banks, which redefine safety and durability in portable charging.

• Premium LiFePO4 Cells: Utilizes Lithium Iron Phosphate (LiFePO4) battery cells, fundamentally eliminating the safety and lifespan anxieties associated with traditional lithium batteries.

• Fast & Flexible: Available in massive 10,000mAh and 20,000mAh capacity options, both supporting PD 30W fast charging for rapid power recovery.

• Ingenious Design: Features a thoughtfully designed, detachable charging cable. Users can flexibly store or replace the cable according to their needs, greatly enhancing portability and flexibility. It is the ideal choice for users seeking ultimate safety and long-lasting endurance.

Driving the Future of Portable Energy

MARSTEK's successful showcase in Tokyo vividly illustrates the brand's commitment to continuous innovation in the portable and sustainable energy sectors. By delivering smart, long-lasting, and highly adaptable products, MARSTEK is not only solving everyday power needs but also empowering users worldwide to participate in a greener, circular economy.