IEC 60335-1 Annex B.20.1 Pressure Tester for 2070 kPa battery-operated appliance enclosure pressure testing, shown with manual pressure pump and selectable pressure tanks.

Laboratory view of the IEC 60335-1 Annex B.20.1 Pressure Tester used for manual enclosure pressure testing of battery-operated appliances with integral metal-ion batteries.

IEC 60335-1 Annex B.20.1 Pressure Tester showing 20 ml, 30 ml, 50 ml and 100 ml tank configuration for enclosure venting pressure evaluation.

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IEC 60335-1 Annex B.20.1 Pressure Tester

IEC 60335-1 Annex B.20.1 Pressure Tester is a manual pressure test system for battery-operated appliances incorporating integral metal-ion batteries. It is used to evaluate whether the appliance enclosure can withstand and release pressure generated when a battery cell vents during failure, using a 2070 kPa initial overpressure condition with selectable 20 / 30 / 50 / 100 ml pressure tanks.

Designed for IEC 60335-1 Annex B.20.1 pressure testing
Used for battery-operated appliances with integral metal-ion batteries
Supports enclosure pressure resistance and venting performance evaluation
Manual pressure operation
Pressure gauge range: 0–6000 kPa
Initial overpressure condition: 2070 kPa ±10%
Four pressure tank options: 20 ml, 30 ml, 50 ml and 100 ml
Internal pipe / orifice size: 2.85 ± 0.05 mm
Used to verify whether enclosure pressure can drop below the required level within the specified time
Calibration certificate support listed on the original product page
Suitable for appliance manufacturers, battery appliance laboratories, safety testing labs and certification preparation teams

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IEC 60335-1 Annex B.20.1 Pressure Tester Overview

The IEC 60335-1 Annex B.20.1 Pressure Tester is used to simulate the internal pressure condition that may occur when a metal-ion battery cell vents inside an appliance enclosure. The tester injects a controlled volume of air into the enclosure through a defined small-diameter orifice, helping laboratories check whether the enclosure structure and venting path can release pressure safely.

This test is especially relevant for compact battery-operated appliances where the battery is built into the product. If the enclosure does not have sufficient venting or structural strength, pressure may cause cracking, cover separation, deformation or unintended rupture.

For overseas B2B buyers, this product helps support IEC 60335-1 Annex B compliance preparation, enclosure design verification, R&D comparison and pre-certification testing before submitting samples to a third-party laboratory.

What This Test Verifies

IEC 60335-1 Annex B.20.1 is concerned with the enclosure behavior of a battery-operated appliance when an integral metal-ion cell vents during failure. The pressure tester supports the pressure injection test path by checking whether the appliance enclosure can release pressure without unsafe rupture damage.

The test helps manufacturers and laboratories evaluate:

● Whether the enclosure venting path is sufficient	● Whether gas pressure can be released within the required time
● Whether the enclosure cracks, bursts, separates or deforms unsafely	● Whether different enclosure designs perform consistently under the same pressure condition
● Whether the sample is ready for formal safety testing or further design improvement

Technical Specifications

Test Performance and Standard Information

Parameter	Specification	Remark or Notes
Product name	IEC 60335-1 Annex B.20.1 Pressure Tester	Manual pressure tester for enclosure pressure testing
Applicable standard	IEC 60335-1 Annex B.20.1	Battery-operated appliance enclosure pressure test
Test object	Battery-operated appliances with integral metal-ion batteries	According to Annex B.20.1 application
Test purpose	Enclosure pressure resistance and venting verification	Simulates pressure generated when a cell vents during failure
Pressure method	Manual pressure	Listed on original product page
Pressure gauge range	0–6000 kPa	Listed on original product page
Initial pressure condition	2070 kPa ±10%	According to Annex B.20.1 test description
Pressure tanks	20 ml, 30 ml, 50 ml, 100 ml	Four tank options for different test requirements
Internal pipe / orifice size	2.85 ± 0.05 mm	Listed on original product page
Pressure decay reference	Below 70 kPa within 30 s	According to Annex B.20.1 test description
Test fitting volume limit	Not more than 3 ml increase to enclosure volume	According to Annex B.20.1 test description

Ordering and Documentation Information

Item	Information	Remark or Notes
Brand	KingPo	Original product page information
Place of origin	China	Original product page information
Model number	IEC 60335-1 Annex B-B.20.1	Original model reference
Certification support	Calibration certificate	Listed on original product page
MOQ	1	Minimum order quantity
Price	To be quoted	Confirm according to order requirement
Packaging	Safety carton pack or plywood box	Original product page information
Delivery period	12 working days	Confirm before order
Payment method	T/T	Original product page information
Supply capacity	20 pcs per month	Original product page information

Testing Principle and Result Evaluation

The IEC 60335-1 Annex B.20.1 Pressure Tester injects air into the appliance enclosure through a 2.85 ± 0.05 mm orifice at an initial overpressure of 2070 kPa ±10%. This simulates the pressure generated when a metal-ion cell vents during failure.

IEC 60335-1 Annex B.20.1 Pressure Tester in laboratory operation for 2070 kPa enclosure pressure testing and venting evaluation of battery-operated appliances. — The Operation of IEC 60335-1 Annex B.20.1 Pressure Tester

During testing, the selected pressure tank is connected to the enclosure according to the required setup. The laboratory observes whether the pressure can be released through the enclosure openings or venting structure without unintended rupture damage.

The result is evaluated by checking whether the enclosure pressure drops below 70 kPa within 30 seconds and whether the enclosure remains mechanically safe after the test. Final judgment should follow IEC 60335-1 Annex B.20.1 and the laboratory’s acceptance criteria.

Pressure Tank Selection and Setup Notes

The tester includes 20 ml, 30 ml, 50 ml and 100 ml pressure tanks. The correct tank should be selected according to the applicable test condition and the required air volume specified by the standard.

Diagram of the IEC 60335-1 Annex B.20.1 Pressure Tester showing selectable pressure tank configuration for 2070 kPa enclosure pressure testing of battery-operated appliances. — IEC 60335-1 Annex B.20.1 Pressure Tester

Before testing, the laboratory should confirm the appliance enclosure volume, battery compartment structure, vent openings and connection method. Test fittings should be designed carefully because the Annex B.20.1 test description limits the additional enclosure volume caused by fittings to not more than 3 ml.

For formal testing, it is recommended to record the selected tank volume, initial pressure, pressure decay time, orifice size, enclosure condition and any visible cracking, rupture, cover separation or deformation.

Common Test and Purchase Errors

Reliable pressure testing depends on correct setup and careful post-test inspection. Laboratories should avoid:

● Selecting a pressure tank without confirming the required air volume	● Ignoring the 2.85 ± 0.05 mm orifice requirement
● Using fittings that increase enclosure volume beyond the allowed limit	● Starting the test without checking enclosure sealing and vent path
● Recording only pass/fail results without pressure decay time	● Missing minor cracks, cover separation or local rupture after testing
● Using a pressure gauge without confirming calibration scope	● Applying the test to samples outside the Annex B.20.1 application scope

Compliance & Regulatory Assurance

This product is designed to support IEC 60335-1 Annex B.20.1 Pressure Tester applications for battery-operated appliance enclosure pressure testing. The tester provides the required pressure generation, orifice condition and pressure tank configuration for the pressure injection test path.

Final compliance does not depend on the tester alone. It depends on the official standard, sample structure, enclosure volume, selected tank volume, venting path, pressure decay result and post-test inspection. If the equipment will be used for accredited laboratory work, the pressure gauge calibration scope and tank verification requirements should be confirmed before order.

Technical Inquiry & Configuration Support

Before requesting a quotation, customers are recommended to provide:

Applicable standard: IEC 60335-1 Annex B.20.1 or internal test method
Appliance type and enclosure structure
Battery chemistry and battery capacity
Enclosure volume or battery compartment volume
Required pressure tank volume: 20 ml, 30 ml, 50 ml or 100 ml
Fixture or connection requirement for the enclosure
Required pressure gauge calibration scope
Documentation or calibration certificate requirement
Quantity requirement
Delivery schedule and packaging requirement

Based on this information, KingPo can confirm whether the IEC 60335-1 Annex B.20.1 Pressure Tester configuration is suitable for the customer’s enclosure pressure resistance testing requirement.

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IEC 60335-1 Annex B.20.1 Pressure Tester

IEC 60335-1 Annex B.20.1 Pressure Tester FAQs

What is the IEC 60335-1 Annex B.20.1 Pressure Tester used for?

It is used to test whether the enclosure of a battery-operated appliance with an integral metal-ion battery can withstand and release pressure generated when a cell vents during failure.

Which standard does this tester follow?

The tester is designed for IEC 60335-1 Annex B.20.1 pressure testing.

What pressure condition is used in the test?

The Annex B.20.1 test description uses an initial overpressure of 2070 kPa ±10%.

What is the pressure gauge range?

The original product page lists the pressure gauge range as 0–6000 kPa.

What pressure tank volumes are available?

The tester includes four pressure tank options: 20 ml, 30 ml, 50 ml and 100 ml.

What is the internal pipe or orifice size?

The original product page lists the internal pipe size as 2.85 ± 0.05 mm.

What is the pressure decay requirement?

According to the Annex B.20.1 test description, the overpressure within the enclosure should drop below 70 kPa within 30 seconds without unintended rupture damage.

Is this tester manually operated?

Yes. The original product page lists the pressure way as manual.

Is calibration documentation available?

The original product page lists Calibration certificate under certification. Customers should confirm the covered parameters and calibration scope before order.

What should customers confirm before ordering?

Customers should confirm the appliance type, battery type, enclosure structure, required pressure tank, fixture connection method, calibration requirement and delivery schedule.