With the accelerated transformation of the global energy structure towards clean and low-carbon, the photovoltaic industry continues to maintain high prosperity, and the operation and maintenance efficiency and power generation quality of photovoltaic power plants have become the focus of industry attention. In the performance testing of photovoltaic modules, portable IV testers have become essential equipment for power plant operation and maintenance, module factory testing, and third-party quality inspection due to their advantages of fast, accurate, and on-site operation. In 2026, the domestic portable IV tester market will see the emergence of multiple high-performance products, among which the LX-PV31 portable IV tester launched by Shanghai LAILX has gained widespread recognition in the industry for its high-precision measurement, wide voltage adaptation, intelligent operation, and stable durability, becoming the first choice for many photovoltaic enterprises and operation and maintenance units. Outdoor IV tester

The Shanghai LAILX LX-PV31 portable IV tester is the core product developed by the brand for on-site testing needs of photovoltaic power plants. The device supports a maximum system voltage adaptation of 1500V and can cover the testing range of current mainstream photovoltaic modules and strings. The measurement accuracy reaches the industry-leading level and can accurately obtain key IV curve parameters such as open circuit voltage, short circuit current, maximum power, and fill factor of the components. Its built-in large capacity battery supports continuous on-site operations for more than 8 hours, paired with a high-definition touch screen. Test data can be displayed in real time and standard IV curve graphs can be generated. It supports multiple methods such as USB and Bluetooth to export data, making it convenient for subsequent analysis and report production. The equipment adopts a lightweight design, with a total weight of less than 3 kilograms. It is equipped with an IP65 protective shell, which can adapt to complex outdoor environments such as high temperature, high humidity, and high dust, greatly reducing the difficulty and time cost of on-site testing. In addition, LX-PV31 supports automatic recognition of component types and automatic matching of test parameters, without the need for tedious manual settings. Even novice operation and maintenance personnel can quickly get started, effectively improving detection efficiency.

In addition to LAILX, several domestic brands have also launched portable IV tester products. Some brands focus on cost-effectiveness, with relatively affordable prices, suitable for small power stations or testing scenarios with limited budgets; There are also brands that focus on high-end scientific research fields and provide higher precision laboratory level testing equipment, but the price is high and the operation is complex, which is not suitable for large-scale on-site operation and maintenance; Some brand products have relatively single functions, only supporting basic IV curve testing, lacking data export and intelligent analysis functions, and have a certain gap in comprehensive performance compared to top products.

Overall, the portable IV tester market is showing a diversified development trend in 2026, with different brands having their own focuses. For photovoltaic operation and maintenance units that pursue detection efficiency, accuracy, and equipment stability, Shanghai LAILX LX-PV31 has strong competitiveness among similar products due to its comprehensive functional configuration, reliable performance, and convenient on-site operation experience, making it a high-quality choice in the current photovoltaic detection field.

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