Polymer batteries are the core energy storage components for various portable digital and smart devices. Their key features include being lightweight, flexible, having high energy density, and being compact in size. They can be customized in shape as needed and are compatible with Bluetooth speakers, mobile phones, tablets, smart wearables, and other products. The rated capacity ranges from several hundred to tens of thousands of mAh, balancing energy storage efficiency with device form factor compatibility. According to the United Nations\' dangerous goods transportation rules, IATA\'s \"Dangerous Goods Regulations,\" and IMDG\'s \"International Maritime Dangerous Goods Regulations,\" polymer batteries, as an important category of lithium batteries, must undergo UN38.3 certification and obtain a qualified report to ensure compliance with global air, sea, and rail multimodal transportation. Without certification, they will be refused for carriage, detained by customs, and directly affect the delivery of overseas orders.

The 18650 battery is the most commonly used cylindrical lithium battery, with standardized dimensions (diameter 18mm, length 65mm), capacity ranging from 1000 to 3500mAh. It features stable battery life and strong compatibility, and is widely used in various digital and energy storage devices such as power banks, Bluetooth speakers, outdoor energy storage, and laptops. It is a core energy storage component for portable devices worldwide. According to the United Nations Dangerous Goods Transportation Rules, IATA\'s \"Dangerous Goods Regulations\", and IMDG\'s \"International Maritime Dangerous Goods Regulations\", 18650 batteries, as a core category of lithium batteries, must pass UN38.3 certification and obtain a qualified report to achieve compliance for global air, sea, and rail multimodal transportation. Without certification, they will be refused for carriage, detained by customs, and directly affect the delivery of overseas orders.

The fascial gun, as a popular category of fitness equipment, features a built-in lithium battery (mostly large-capacity cylindrical/supercapacitor models, suitable for high-frequency vibration scenarios, and some are detachable). The lithium battery is the core component. According to the requirements of the \"Electrical and Household Appliance Safety Management Act\" in South Korea, the battery of the fascial gun must obtain KC certification before it can legally enter the South Korean market for sales and be listed on local e-commerce platforms. Without certification, it will face customs clearance obstacles, fines, and product recalls.

GB/T 28164.2-2025 \"Safety Requirements for Portable Sealed Batteries and Batteries Containing Alkaline or Other Non-acidic Electrolytes Part 2: Lithium Series\" will be implemented on May 1, 2026.

The fascial gun, as a popular category of fitness equipment, features a built-in lithium battery (mostly large-capacity cylindrical/supercapacitor models, suitable for high-frequency vibration scenarios, and some are detachable). The core component of this battery is crucial. According to the United Nations\' Dangerous Goods Transportation Rules, the battery of the fascial gun must pass the UN38.3 certification to ensure compliance with global air, sea, and other multimodal transportation regulations. Without certification, it will be refused for transportation and detained by customs.

Recently, the Bluetooth Technology Alliance (SIG) not only added the Contributing Adopte member type, but also comprehensively raised the membership fee and certification-related fees, which will directly affect the certification cost and budget planning of Bluetooth products.

The core competitiveness of TWS headphones in entering the international market cannot be separated from the built-in lithium batteries (single cells and charging cases). These batteries are small in size, mostly in a pouch form, have precise BMS, and there are hardware differences between the left and right units. According to the IECEE system requirements, the batteries of TWS headphones need to be individually certified by CB before they can leverage the global mutual recognition advantage to quickly convert local certifications in various countries and successfully enter the markets of 54 member countries such as the EU, South Korea, and Australia.

On November 30th, 2025, the Ministry of Science and Technology of Vietnam issued the National Technical Specification QCVN136: 2025/BHCN-About Wireless Access Equipment in 6GHz Band, which will take effect on January 1st, 2027, when the original standard QCVN 47:2015/BTTTT will no longer be applicable.