Longi LR4-72HPH-455M

Powder (measured in watts) and efficiency (how well panels convert sunlight to electricity) are some of the most common metrics used to compare solar panel products. While they are not the only means of comparison, they are important determinants in how much electricity you can produce with a solar panel system. Metrics like power tolerance and temperature coefficient are also important ways to analyze the potential performance of solar panels under the different conditions they will experience over their lifetime...

Solar panels generally come with an output warranty covering the energy production of the panel, and a materials warranty protecting you against undue wear and tear on your equipment. 

 Bifacial solar panels are one exception to these rules, as they have transparent backsheets.

Physical Characteristics

Cell Type 

Monocrystalline

Panel Dimensions

2094.0 mm L
40.0 mm D

Cell Count 

144

The physical characteristics of a solar panel have an impact on the product’s performance. For example, metrics like efficiency and wattage are based on the type, size, and number of solar cells used in a panel.

Solar panels are made all around the world. While the bulk of solar panel manufacturers are based in Asia, companies in the United States, Canada, and other countries also produce high-quality photovoltaics.

·        Positive power tolerance (0~ +5W)

·        High module conversation efficiency

·        Slower power degradation enabled by Low LID Mono PERC technology: first year <2%, 0.55% year 2-25

·        Solid PID resistance ensured by solar cell process optimization and careful module BOM selection

·        Adaptable to harsh environment: passed rigorous salt mist and ammonia tests 

·        Outstanding low light performance, average relative efficiency 97.5% or better at 200W/m²

·        Reduced resistive loss with lower operating current

·        Higher energy yield with lower operating temperature

·        Reduced hot spot risk with optimized electrical design and lower operating current

DC Electrical Characteristics

Warranty and Certifications

• 1. PTC rating calculated using 45°C as the NOCT (Nominal Cell Operating Temperature)