Ensuring Battery Safety & Performance
Comprehensive testing and certification services from Large Power for your battery solutions
Comprehensive In-house Testing Capabilities
Setting New Standards for Battery Safety & Performance
At Large Power, we prioritize the safety, reliability, and compliance of battery solutions. Our comprehensive in-house testing and certification processes are designed to meet the highest industry standards, ensuring every battery system we deliver performs optimally under real-world conditions.
Our advanced testing facilities enable us to conduct rigorous evaluations of battery performance, safety, and environmental adaptability. By managing the entire testing process in-house, we achieve:
Accelerated Time-to-Market
Streamlined testing processes reduce delays associated with third-party evaluations
Enhanced Quality Control
Direct oversight ensures consistent adherence to quality standards
Cost Efficiency
Reduced reliance on external suppliers lowers overall project costs
Key Testing Protocols
afety is non-negotiable in our battery packaging process
Battery Performance Testing
- Internal resistance and rated capacity assessment
- Open-circuit voltage (OCV) analysis
- Storage stability testing
- Temperature performance characterization
- Thermal shock resistance
- Discharge rate capability testing
- Cycle life evaluation
Safety Testing
- Overcharge and abusive charging scenarios
- High-rate charging evaluation
- Short-circuit and overload protection
- Overdischarge and forced discharge conditions
- Extreme temperature and unbalanced charging
- Dielectric withstand voltage testing
- Ground continuity verification
- Mechanical stress tests: vibration, shock, impact
Environmental Testing
- High/low temperature storage testing
- Thermal cycling testing
- Humidity exposure testing
- Operating temperature range testing
- Component thermal performance evaluation
- Altitude simulation testing
- IP rating and immersion testing
Packaging Design Validation
- Drop testing
- ISTA 1A/2A international safe transport testing
- Vibration and compression evaluation
- Shipping environment simulation
- Packaging material durability testing
- Stack pressure testing
Professional testing process
Battery Internal Short Circuit Safety Test | 3250mAh 3.6V Lithium Battery Explosion-Proof Evaluation
This video demonstrates an internal short circuit safety test on a 3250mAh, 3.6V (11.7Wh) lithium battery. The test was conducted inside an explosion-proof chamber with thermocouple temperature monitoring to evaluate the cell’s structural integrity and pressure relief performance. Through real-time data analysis, the test validates the battery’s compliance with industry safety standards and ensures its reliability under extreme conditions.
CNAS-Accredited Testing Center & Compliance
CNAS Laboratory Accreditation · L26157
Accredited on July 13, 2026
Dongguan Large Electronics Co., Ltd. Testing Center has received laboratory accreditation from the China National Accreditation Service for Conformity Assessment (CNAS). The accreditation confirms the testing center’s technical competence, management system, personnel, equipment, and testing processes for activities covered by its approved scope.
This recognition strengthens Large Power’s in-house battery validation, engineering testing, quality control, and technical documentation capabilities for custom lithium battery projects.
Accreditation applies only to testing activities listed in the approved CNAS scope. Acceptance of reports remains subject to the requirements of the relevant regulator, certification body, market, or customer.
Standardized Packaging
Mandatory standard for safe transport of lithium batteries (air, sea, rail and road transport), ensuring batteries withstand various conditions during transit
IEC 62133
Safety requirements for portable sealed secondary lithium cells and batteries, commonly used in consumer electronics
UL 2054
Standard for household and commercial batteries, covering safety requirements for lithium battery packs
Other Certifications
EC/EN 62619, IEC/EN 62133-2, UL 62133-2, ANSI/CAN/UL/ULC 2271, IEC 61960, IEC/EN 62841 and more
Cost Efficiency
Reduced reliance on external suppliers lowers overall project costs
Certifications & Compliance
With our comprehensive testing and certification services, Large Power is your reliable partner for delivering safe, high-performance battery systems. Our commitment to quality and compliance ensures your products are ready for market success.
