WiFiBOX Announces Enhanced Safety Measures in Response to Stricter Carry-on Regulations for Mobile Batteries

Telecom Square Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Yuji Yoshitake; hereinafter, "the Company"), a global provider of cross-border mobile communication solutions, announces the details and operational policy of battery safety measures implemented for its self-service Wi-Fi rental service "WiFiBOX," in response to stricter carry-on regulations for mobile batteries.

In recent years, incidents of smoke and fire caused by lithium-ion batteries have been increasing globally. In response, the International Civil Aviation Organization (ICAO) adopted an international standard in March 2026, limiting the number of mobile batteries allowed in carry-on baggage to "two per passenger." In Japan, the Ministry of Land, Infrastructure, Transport and Tourism is also moving to introduce similar standards, with application expected from mid-April 2026.

Amidst this trend of stricter regulations, concern about the safety of electronic devices containing batteries has grown, and users are increasingly expressing anxiety about "whether they can be brought on board" and their "safety." In light of this situation, we are announcing the specific battery safety measures that have been implemented for WiFiBOX.

Battery Safety Measures and Key Initiatives for WiFiBOX

WiFiBOX is a communication device that also contains a battery. Recognizing these product characteristics, the Company is committed to ensuring safety from the aspects of design, quality, and operation.

1. Guidance for Customers on Safe Usage

The WiFiBOX official website provides a "Quick Guide for Safe Use," which summarizes correct usage methods and precautions, and is widely publicized. Appropriate use not only ensures the safety of the current user but also that of subsequent customers, so we continuously disseminate information.

▼Quick Guide "To Use WiFiBOX Safely"

https://wifibox.telecomsquare.co.jp/pages/guide-safety

2. Product Design Conforming to Safety Standards

WiFiBOX terminals comply with the display requirements of the PSE mark based on Japan's Electrical Appliances and Materials Safety Act. Furthermore, the built-in lithium polymer batteries use cells that comply with international safety standards such as UL, CB, and CCC. In addition, they are equipped with the following protection functions:

The design automatically shuts off the circuit if an abnormality is detected, thereby reducing the risk of heat generation and fire.

※UL: U.S. safety standard

※CB: International Electrotechnical Commission safety standard

※CCC: China Compulsory Certification

3. Operation and Maintenance System

To ensure that terminals are always used in a safe condition, the Company conducts regular inspections and planned maintenance.

This prevents risks associated with aging deterioration.

4. Continuous Safety Management and Response System for Abnormalities

We continuously collect safety-related information to improve service quality. In the unlikely event that abnormalities such as heat generation, swelling, or damage are confirmed, we will promptly collect and replace the device, confirm the incident, identify the cause, and implement improvements to prevent recurrence.

5. Safety Considerations in Terminal Specifications (5G Model)

The WiFiBOX 5G compatible terminal, launched in February 2026, adopts a design that considers the usage environment, taking into account regulatory trends for aircraft cabins. Specifically, by not including accessories such as charging cables, the usage scenarios related to power supply to external devices are limited, thereby reducing the risk of heat generation during use.

■Future Outlook

The Company will continue its efforts to improve battery safety and provide services that can be used with peace of mind, while taking into account international safety standards and regulatory trends.

About WiFiBOX

■Reservation, pickup, and return are all contactless, providing an amazingly simple user experience.

After making a web reservation, you can easily rent a Wi-Fi router by simply pulling it out of a box installed at stations, airports, etc. Furthermore, you can return the WiFiBOX at any location where a WiFiBOX rental machine is installed, even if it's different from the pickup location.

・QR Code is a registered trademark of DENSO WAVE INCORPORATED.

・"Wi-Fi" is a registered trademark of Wi-Fi Alliance.