

What Is the Double 85 Test?

Feb 28 2025

Table of Content [Hide]

Prolong Product Life with Double 85 Test: Prevent Failures in Electronics and PV Components

Electronics, lithium batteries, LED lighting, and photovoltaic panels are often exposed to extreme heat and humidity, which can lead to failures such as battery bulge, circuit short circuits, or LED degradation. Without proper testing, these failures can occur unexpectedly, resulting in costly recalls or reduced product lifespan.

The Double 85 Test addresses this by simulating extreme wet and thermal environments in a controlled setting using a PV Environmental Test Chamber, allowing manufacturers to identify weaknesses early and enhance product reliability.

Double 85 Test: Accelerated Aging for Electronics Reliability

The Double 85 Test is an accelerated aging method where products are continuously exposed to 85°C ±2°C temperature and 85% RH ±3% humidity. The purpose of this test is to evaluate:

Weather resistance
Sealing performance
Electrical stability

High temperature accelerates chemical reactions inside materials, while high humidity promotes moisture ingress, corrosion, and insulation degradation. By maintaining these conditions for extended periods, manufacturers can simulate years of real-world exposure in just hundreds or thousands of hours.

This test is a core requirement in international standards such as IEC 60068, IEC 61215, and JESD22-A101, and is widely used in photovoltaic components, automotive electronics, lithium batteries, and LED lighting.

For common consumer electronics such as smartphones and smart watches, industry standards typically require at least 500 hours of Double 85 Testing to prevent failures in hot and humid regions, such as screen malfunctions, battery swelling, or internal circuit shorts. For high-reliability products like outdoor power equipment or electric vehicle components, testing may extend beyond 1,000 hours to ensure long-term performance and safety.

Damp Heat Test Duration: 168h to 2000h for Different Electronics

Test Duration	Typical Applications	Notes
168h	Small electronic devices	Basic verification
504h	Smartphones, smart watches	Industry standard minimum
1000h	Automotive electronics, photovoltaic panels	High reliability required
2000h	Outdoor power equipment	Extreme reliability testing
IEC 60068-2-67-2019

Different durations allow manufacturers to tailor testing to the specific reliability requirements of their products. Shorter tests can detect early failures in consumer electronics, while longer tests help preventing long-term failures and warranty issues.

Damp Heat Chamber for Double 85 Test: Reliable Testing, Simplified Workflow

The LIB industry Damp Heat Chamber plays a key role in Double 85 Testing by providing a controlled, stable environment to accurately simulate extreme conditions. Unlike traditional product listings, the focus here is on how the chamber helps users achieve testing goals efficiently:

· Simulate Real-World Conditions Accurately: Advanced temperature and humidity control ensures repeatable and reliable results, giving confidence in accelerated aging outcomes.

· Flexible Testing for Various Products: From small electronic devices to full-size photovoltaic panels, the chamber supports multiple test stations simultaneously, maximizing efficiency.

· Ease of Monitoring: The large observation window with internal LED lighting and intuitive programmable controller allows operators to monitor samples without interrupting tests.

· Safety and Reliability: Multiple protection systems safeguard both operators and products, enabling long-term, uninterrupted testing.

This approach ensures that manufacturers can accelerate product development, reduce warranty risks, and deliver reliable electronics and photovoltaic solutions.

LIB industry’s solutions provide manufacturers with the confidence that their products will perform reliably under extreme environmental conditions.

Get Your Custom Double 85 Test Solution Today with LIB Industry

Why Choose LIB Industry’s Damp Heat Chambers for Double 85 Testing

16+ years of experience in designing environmental test chambers
Advanced temperature and humidity control ensures precise and repeatable testing
Flexible customization: small to large chambers, single or multi-station setups
Fast pre-sales and after-sales support: 1–3 hour response time
Compliance with international standards: IEC, JESD, and others

Submit your testing requirements and contact information to receive:

Tailored Double 85 Test solutions for your products
Rapid quotes and consultation
Multi-volume chamber options to suit small devices or large photovoltaic panels
Reliable testing that ensures electronics and photovoltaic modules meet international standards and excel in extreme environments

Ensure your products pass the test for reliability and durability with LIB Industry’s Damp Heat and PV Test Chambers at inquiry@libtestchamber.com.

References