Ultra-Thin 8.5mm MagSafe Compatible “Sugoi Mobile Battery” Pre-Released: Eliminating Power Anxiety for Daily Use and Emergencies

JAPAN CROWDFUNDING, an import and sales business based in Fukuoka Prefecture, has begun pre-sales of its next-generation MagSafe-compatible, ultra-thin mobile power source, the “Sugoi Mobile Battery,” on the crowdfunding service Makuake.

This product achieves a card-like thinness of just 8.5mm while supporting MagSafe wireless charging. It integrates three functions into one device: “carrying it,” “charging by simply placing it,” and “preparing for emergencies.” The “Sugoi Mobile Battery” is introduced as a new lifeline designed to eliminate power anxiety from daily life to disaster situations.

Makuake sales URL: https://www.makuake.com/project/sugoi24/

The Need for Thin, Readily Available Power

In recent years, with the frequent occurrence of natural disasters such as earthquakes, heavy rains, and typhoons, ensuring smartphone power has become a fundamental part of disaster infrastructure. Mobile batteries are widely listed as essential items in emergency kits by the Cabinet Office and local government disaster prevention guidelines.

However, traditional mobile batteries often present challenges: they can be heavy and bulky, require cables, and are not typically carried daily. These factors can lead to situations where they are “prepared but not usable.”

JAPAN CROWDFUNDING focused on addressing these issues by creating a device that offers “thinness for constant portability” and “ease of use in one second.”

8.5mm Thinness for Card-Like Portability

The “Sugoi Mobile Battery” boasts an ultra-thin 8.5mm design, allowing it to be stored alongside a wallet or smartphone. Its thinness is comparable to a business card or card case, making it easily fit into bags, pockets, or disaster pouches. This design helps prevent forgetting it when going out, ensures it doesn’t get in the way when stored in a disaster bag, and is ideal for travel, business trips, and holiday seasons when disaster awareness tends to be higher.

MagSafe for Instant Charging

With MagSafe compatibility, the battery attaches magnetically to a MagSafe-enabled iPhone, initiating cable-free charging instantly. This eliminates the need to “search, plug in, and align” in dark or chaotic emergency situations. Wireless charging also reduces the risk of terminal deterioration, contributing to the safe and prolonged use of increasingly expensive smartphones.

Reliability Backed by Data

The “Sugoi Mobile Battery” is designed with reliability comparable to a “life infrastructure” rather than just a “gadget.”

PSE certification has been obtained, meeting Japanese electrical appliance safety standards.
High-quality cells are used to maintain stable output even after long-term storage.
Despite its thinness, it is designed for both daily use and emergency situations.

Recommended for:

Those who want to carry a mobile battery daily but are deterred by its weight.
Those reviewing disaster preparedness goods with limited storage space.
Those who want to reduce cable management stress.
Those preparing for the year-end and new year season, which often involves increased travel and business trips.

Product Overview

Product Name: Sugoi Mobile Battery
Size: 100×65×8.5mm
Weight: 106g (without strap), 123g (with strap)
Cable: USB Type-C cable
Battery Capacity: 5000mAh
Total Output: Max 15W (iPhone max 7.5W), Apple Watch 3W
Certifications: PSE compliant / CE / FCC / RoHS
Material: Aluminum alloy, silicone, ABS + PC

Sales Information

Product Name: Sugoi Mobile Battery
Regular Price: 9,900 JPY (tax included)
Makuake Limited Price: 7,623 JPY (tax and shipping included) – Up to 23% OFF
Sales Period: January 4, 2026 (Sunday) – January 30, 2026 (Friday)
Accessories: Main unit, USB-Type C-C power cable, instruction manual
Sales URL: https://www.makuake.com/project/sugoi24/
Note: Shipping is only available within Japan.