UL has formulated the standard UL4200A to ensure the safety of products containing button batteries during use (lithium battery testing).

This standard is for UL 4200A and is designed to reduce the risk of children removing coin cells and coin cells from products and swallowing batteries. These lithium batteries can cause serious injury to children. These incidents usually involve children under the age of four. Serious injury can occur when batteries are left in the digestive tract or other parts of the body.

In order to solve these problems,

The U.S. Consumer Product Safety Commission (CPSC) staff is participating in voluntary standards activities related to consumer batteries, including UL 4200A – Product Safety Standard for Button or Coin Cell Batteries Using Lithium Technology.

UL4200A requires products containing removable batteries to use specified methods to ensure reliable battery placement. The standard, which details sexual restrictions, including abuse, is designed to assess the potential for accidental battery release of products.

UL4200A also describes how products should be labeled, including warnings about hazards, and keeping batteries away from children. The standard contains specific language describing the possible harm caused by swallowing batteries and the need for immediate medical attention.

UL 4200A Scope:

1.1 These requirements cover household-type products that contain or may use lithium technology buttons or coin cells.

1.2 These requirements do not cover products that exclusively use battery forms other than lithium coin or coin cells.

1.3 These requirements apply to consumer products containing lithium button or button cells. They are not intended for use in products that, due to their dedicated purpose and instructions, are not intended to be used in places where children may be able to reach them, such as product displays intended for professional use or commercial use in places that are normally or not normally accessible.

1.4 These requirements are intended to supplement other safety requirements for products containing button or button batteries and are not intended to replace specific requirements incorporated into other safety standards to mitigate the physiological hazards of button or button batteries.

1. Applicable products

Consumer (household) products installed with lithium coin cells with a diameter of ≤32mm and a diameter greater than the height (but there may be additional supplementary requirements in some end product standards).

2. The main purpose (but not limited to) of the new requirements: to reduce the risk of accidental swallowing by children.

3. Structure

3.1 When the terminal product has a "battery that allows the user to move or replace", the structure needs to meet the following requirements:

3.1.1 Use the probe 11 of IEC61032 to test, do not touch the battery. During inspection, enclosures that can be opened without the aid of a tool, or by hand and with less than two independent consecutive movements, are evaluated for opening during inspection.

3.1.2 The product needs to be designed to prevent children from moving the battery:

A tool (eg, screwdriver, coin) is required to open the battery compartment; or at least two separate and simultaneous actions are required to open the battery compartment lid or door by hand.

3.1.3 If the battery compartment lid or door is secured by screws or similar fasteners, the fasteners need to be captured on the lid or door.

3.2 When the product has a "battery that does not allow users to move or replace", it needs to effectively prevent users or children from removing it, and the product should be designed to:

3.2.1 make the battery inaccessible by the case or the like; or

3.2.2 Fully attach the battery by welding, rivets or similar.

4. Test requirements

4.1 Abuse Test:

3 drops for portable products and 10 drops for handheld products. Drop to a horizontal hard board from a height of 1 meter each time. The casing or battery cavity cover and door shall be subjected to a 2J impact test, and the test shall be carried out 3 times. Rolling Test: A force of 330N is applied to the exposed face for 10 seconds, the force is applied through a flat surface of approximately 100mm x 250mm. After testing a, b, c, a force of 45 N is applied through the test bar 11 of IEC 61032 for 10 seconds, the battery shall not become accessible. During detection, the battery compartment cover and door do not need to be opened and remain functional.

4.2 Installation firmness test: For the installation firmness of the "battery that does not allow users to move or replace", use a hook and use an outward force of 20 N for 10 seconds, and the battery must not be separated.

The UL 4200A certification process is as follows:

1. Fill in the application form;

2. Provide samples;

3. Arrange the test;

4. After passing the test, a draft will be issued;

5. Confirm the official document.

UL 4200A certification cycle:

about two weeks