Wireless Communication
EU RED Network Security Standard EN 18031
Wireless and communication detection
Mobile communication product certification
Bluetooth BQB Product Certification
FM/AM Product Certification
WiFi Product Certification
Wireless charging product certification
Interphone product certification
Base station certification
SAR testing
Receiver Product Certification
5G NR Product Certification
UWB Product Certification
Internet of Things authentication
Electromagnetic compatibility
Automotive Electronics EMC Testing
EMC rectification
EMC
Automotive Electronics
Electrical performance testing
EMS testing - radiation anti-interference testing system (including radar waves)
EMS Testing - Electrostatic Discharge
EMS Test - Transient Conducted Immunity Test
EMS Testing - Portable Transmitter Immunity
EMS Test - High Current Injection (BCI) Test
EMS test - low-frequency magnetic field anti-interference test
EMI Testing - Transient Conducted Emissions Testing System
EMI testing - low-frequency magnetic field emission
EMI Test - Radiation Emission Test
EMI Test - Conducted Emissions Test
Automotive Electronic Testing
Automotive Parts Inspection
Automotive ELV&VOC
Reliability testing
Temperature shock test
Vibration testing
Instrument panel/instrument panel three comprehensive vibration test
Comprehensive vibration test of door inner panel III
Sunvisor Three Comprehensive Vibration Test
Spoiler Three Comprehensive Vibration Test
Three comprehensive vibration tests of car front and rear bumpers
Three comprehensive vibration tests for lamp housing/lampshade
Comprehensive vibration test of outer circumference three
Automotive metal material testing
Performance testing of automotive lighting fixtures
Rapid temperature change test
Vibration
Common issues with vibration testing
Common issues with fatigue testing
Common issues with high and low temperature testing
Conducted Interference (CE) - Suzhou Lixun Standard
Electromagnetic Radiation Tolerance Test (RS) - Suzhou LCS Standard
Electrical Fast Pulse Withstand Test (EFT) - Suzhou LCS Standard
Voltage flicker test - Suzhou LCS standard
Electronic appliances
Household appliance product testing
Electrical accessory product testing
Household appliance testing
Chemical Testing
Introduction to PFAS Testing
MOSH/MOAH Mineral Oil Testing Service
MOSH/MOAH Mineral Oil Testing and Certification Report Service
Consumer Product Testing Services - WEEE Chapter
Ecological textile testing
Leather Footwear Inspection
Food contact material testing
Testing of toys and baby products
Hazardous substance testing
Electronic Cigarette Testing
Electronic cigarette detection
Reliability testing
Other tests - pencil hardness test
Mechanical testing - Packaging compression test
Climate environment testing - Xenon lamp aging test
Battery Testing
Power storage battery testing and certification
Consumer Electronics Battery Testing and Certification
power battery
Light electric vehicle batteries
Energy storage battery
Portable battery
Battery testing
battery test
Lamp Inspection
Inspection of ship lighting fixtures
COI Index Test for Medical Indoor Lighting
Lamp safety inspection
Luminaire energy efficiency testing
EMC testing of lighting fixtures
Integral Ball Laboratory
Photobiology Experiment
Light distribution test
Lamp aging test
Lamp IP waterproof
Lamp performance testing
Lamp reliability testing
Children's toy testing
Testing standards for toy products
China Certification
China's "national promotion" RoHS certification
China Energy Efficiency Label Certification
China Energy Conservation Certification
China CQC Certification
Tmall JD Quality Inspection Report
China SRRC Certification
Taiwan BSMI certification
Taiwan NCC certification
China CCC Compulsory Certification
Asia Certification
Vietnam certification
KC certification
KUCAS Certification in Kuwait
Singapore PSB certification
Iraq COC Certification
IMDA certification
VCCI Certification in Japan
JATE certification in Japan
PSE certification
BIS certification
Japanese TELEC certification
European Certification
RoHS certification
GOST certification in Russia
Russian EAC certification
Northern Ireland UKNI logo
Electrical ENEC certification
European D-MARK certification
Türkiye BTK certification
TSE certification in Türkiye
CE certification in Türkiye
RED certification
German TUV-SUD certification
CE-ERP certification
REACH certification
German GS certification
EU E-Mark certification
North American Certification
Ecuador VOC certification
Mexico NOM certification
IRAM certification
CPSC Certification in the United States
CSA certification
ASTM certification
FDA certification
CEC certification
ETL certification
ul certification
IC certification
Energy Star
FCC Certification in the United States
ASTM certification
Middle East Certification
Israel SII certification
Saudi SABER certification
GCC certification for the seven Gulf countries
Iran COI certification
Qatar COC Certification
Iraq COC Certification
Saudi EER Energy Efficiency Certification
Saudi SABER certification
Algeria PCA certification
PVOC certification
Australia Certification
New Zealand IC-F testing
VEET certification
LCP certification
GEMS certification
RCM certification
C-Tick certification
SAA certification
Africa Certification
Gabon COC certification
Algeria COC certification
Ethiopian VOC and COC certification
Mauritius VOC certification
Ghana COC certification
COC certification in Burundi
Zambia COC certification
Botswana COC Certification
Uganda PVOC certification
SABS certification in South Africa
South African LOA certification
Zimbabwe CBCA Certification
Nigeria SONCAP certification
Kenya PVOC certification
African COC certification
Other certifications
WEEE
Bluetooth BQB certification
IECEE registration
MHRA registration in the UK
TRAINING
Management system training
Laboratory technical training
Laboratory Process Consulting
Laboratory decoration construction
Wireless Communication
Electromagnetic compatibility
Automotive Electronics
Automotive Parts Inspection
Electronic appliances
Chemical Testing
Electronic Cigarette Testing
Reliability testing
Battery Testing
Lamp Inspection
Children's toy testing
China Certification
Asia Certification
European Certification
North American Certification
Middle East Certification
Australia Certification
Africa Certification
Other certifications
TRAINING
Wireless Communication
Electromagnetic compatibility
Automotive Electronics
Automotive Parts Inspection
Electronic appliances
Chemical Testing
Electronic Cigarette Testing
Reliability testing
Battery Testing
Lamp Inspection
Children's toy testing
China Certification
Asia Certification
European Certification
North American Certification
Middle East Certification
Australia Certification
Africa Certification
Other certifications
TRAINING
Wireless Communication
Electromagnetic compatibility
Automotive Electronics
Automotive Parts Inspection
Electronic appliances
Chemical Testing
Electronic Cigarette Testing
Reliability testing
Battery Testing
Lamp Inspection
Children's toy testing
China Certification
Asia Certification
European Certification
North American Certification
Middle East Certification
Australia Certification
Africa Certification
Other certifications
TRAINING
Wireless Communication
Electromagnetic compatibility
Automotive Electronics
Automotive Parts Inspection
Electronic appliances
Chemical Testing
Electronic Cigarette Testing
Reliability testing
Battery Testing
Lamp Inspection
Children's toy testing
China Certification
Asia Certification
European Certification
North American Certification
Middle East Certification
Australia Certification
Africa Certification
Other certifications
TRAINING
Wireless Communication
Electromagnetic compatibility
Automotive Electronics
Automotive Parts Inspection
Electronic appliances
Chemical Testing
Electronic Cigarette Testing
Reliability testing
Battery Testing
Lamp Inspection
Children's toy testing
China Certification
Asia Certification
European Certification
North American Certification
Middle East Certification
Australia Certification
Africa Certification
Other certifications
TRAINING
Wireless Communication
Electromagnetic compatibility
Automotive Electronics
Automotive Parts Inspection
Electronic appliances
Chemical Testing
Electronic Cigarette Testing
Reliability testing
Battery Testing
Lamp Inspection
Children's toy testing
China Certification
Asia Certification
European Certification
North American Certification
Middle East Certification
Australia Certification
Africa Certification
Other certifications
TRAINING
Solutions
-
-
-
Automotive interior and exterior trim - Environmental testing
-
Automotive interior and exterior decorations (electronic and electrical components) - IP protection
-
Automotive electronic and electrical components - Electrical performance
-
Automotive interior and exterior trims - Mechanical performance testing
Contact Us
National 24-hour service hotline
400-116-2629
Group Headquarters
E-mail: webmaster@lcs-cert.com
Address: Shenzhen City, Baoan District, Shajing Street, Nga side of the school of Wei Juji Industrial Park, Building A 1 ~ 2 floor, Building C 3 floor
Overcharging test
a) Initialization charging of battery module;
b) The battery module is charged in a constant current manner until the voltage of any battery cell reaches 1.5 times the termination voltage of the battery cell charging or for a period of time
Stop charging at 1 hour, and the charging current should be the smaller of 1Crcn and the maximum continuous charging current of the product;
c) Observe for 1 hour;
d) Observe for any signs of expansion, leakage, smoking, fire, or explosion.
Overcharging test is an important testing method for evaluating the safety and stability of battery modules under overcharging conditions. By simulating the reaction of battery modules under overcharging conditions, detect whether the battery will experience dangerous situations such as expansion, leakage, smoking, fire, explosion, etc. The following is the detailed content of the overcharge test:
1. Test purpose
Evaluate the safety and stability of battery modules under overcharging conditions.
Ensure that the battery module does not experience dangerous situations such as expansion, leakage, smoking, fire, explosion, etc. under overcharging conditions.
Verify whether the battery module complies with relevant safety standards and requirements.
2. Testing principle
By charging the battery module in a constant current manner until the voltage of any battery cell reaches 1.5 times the termination voltage of battery cell charging or for 1 hour, the appearance, structural integrity, and safety of the battery are tested.
3. Testing methods
(1) Test preparation
Initialize and charge the battery module.
Prepare constant current charging equipment and voltage measurement equipment.
(2) Overcharge test
Charge the battery module with a constant current, taking the smaller of 1C<sub>rcn</sub>and the maximum continuous charging current of the product.
Stop charging when the voltage of any battery cell reaches 1.5 times the termination voltage of battery cell charging or when the time reaches 1 hour.
(3) Observation after testing
Observe for 1 hour and record whether the battery module has any phenomena such as expansion, leakage, smoking, fire, explosion, etc.
4. Testing standards
International standards:
IEC 62133 (Safety requirements for portable sealed secondary batteries).
UN 38.3 (Safety testing for transportation of lithium batteries).
Industry standards:
GB 31241 (Safety Requirements for Lithium ion Batteries for Portable Electronic Products, China).
UL 1642 (Lithium Battery Safety Standard, USA).
5. Testing equipment
Constant current charging device: used for charging at a specified charging current.
Voltage measurement equipment: used to measure the voltage of battery cells.
Infrared thermal imaging device: used to monitor the temperature changes of battery modules during overcharge testing.
6. Data analysis and evaluation
Appearance inspection: Record whether the battery module has any expansion, leakage, or other phenomena.
Safety assessment: Observe whether the battery module has any dangerous situations such as smoking, fire, explosion, etc.
Electrical performance: Measure the voltage and internal resistance of the battery module to evaluate whether its electrical performance is normal.
7. Common problems and solutions
Battery expansion: It may be due to excessive internal pressure or material failure, and battery design and production processes need to be optimized.
Leakage: It may be due to insufficient battery sealing, and the sealing design of the battery needs to be improved.
Fire or explosion: It may be due to internal short circuit or material failure of the battery, and the battery design and production process need to be optimized.
8. Application scenarios
Testing of battery modules for consumer electronics products such as smartphones, laptops, and tablets.
Electric tools: such as battery module testing for electric drills and chainsaws.
Electric vehicles: such as testing of power battery modules for electric vehicles.
Energy storage system: such as testing of solar energy storage battery modules.
9. Test report
Test conditions: including charging current, charging time, termination conditions, etc.
Test results: including appearance inspection results, safety assessment, electrical performance, etc.
Conclusion and Suggestions: Evaluate whether the sample meets the relevant standards and propose improvement suggestions.
Through overcharge testing, the safety and stability of battery modules can be comprehensively evaluated under overcharge conditions, ensuring that they can meet safety requirements in practical use and providing scientific basis for the design and optimization of battery modules.
Large-scale experimental base
Professional Lab
Analysis Method
Testing/year
WeChat Inquiry
Reservation
Contact Us
National 24-hour service hotline
Address：Juji Industrial Park, Xueziwei, Ngabian, Shajing Street, Baoan District, Shenzhen Building A 1~2F, Building C 3F
WeChat public number
Share industry dry goods
WeChat consultation
Please note consulting services
Follow Jitterbug
Mobile website
di complaint mailbox: customer.complaint@lcs-cert.com complaint telephone tel: 18126445450 certificate report verification of authenticity mailbox: verification@lcs-cert.com