S SOLARSPECS
LONGi Green Energy is the world's largest solar technology company by market capitalization, pioneering mono-crystalline silicon technology and the industry-standard Hi-MO series. The LONGi LR6-78HBD-420M is a Monocrystalline solar module delivering 420W of rated power output with 19.92% module efficiency. Designed for distributed generation projects, this panel brings reliable performance.
🏭View all 261 LONGi models→ Brand range: 270W–605W
Monocrystalline

LONGi LR6-78HBD-420M

Max Power
420W
Efficiency
19.92%
Operating V
44.6V
Warranty
25Y
LONGi LR6-78HBD-420M logo
Technical Specifications
Open Circuit Voltage (Voc)53.2V
Short Circuit Current (Isc)10.18A
Voltage at Pmax (Vmp)44.6V
Current at Pmax (Imp)9.42A
Temp. Coefficient of Pmax-0.337%/°C
Dimensions1865 x 1130 x 35 mm
Weight26.3kg
NOCT44.81°C
PTC Rating399.0W
📋 Data verified: June 2026 📄 Specs based on STC (1000 W/m², 25°C, AM 1.5) 🏷️ 261 LONGi models in database

FAQ

How efficient is the LONGi LR6-78HBD-420M?

This panel has 19.92% efficiency, which is above average for commercial solar panels.

What are the dimensions and weight of the LONGi LR6-78HBD-420M?

It measures 1865 x 1130 x 35 mm and weighs 26.3kg.

How long is the warranty for the LONGi LR6-78HBD-420M?

The LR6-78HBD-420M comes with a 25-year product warranty covering defects and degradation.

What is the max power output of the LONGi LR6-78HBD-420M?

The LONGi LR6-78HBD-420M is rated at 420W under STC (1000 W/m², 25°C, AM 1.5).

Compare This Panel

Add this LONGi LR6-78HBD-420M to compare specs side-by-side with other commercial solar panels.

📄 Download

Save this datasheet as PDF for offline reference.

Share

Advertisement
📊 Brand Context

LONGi offers 261 solar panel models from 270W to 605W.

Browse all LONGi models →
⚡ 0 to Compare