Longi Solar 645W Panel, Hi-MO X10

The Longi LR7-72HVH-645M is a 645W back-contact (BC) module from the new Hi-MO X10 Explorer series, delivering up to 23.9% efficiency.

Hi-MO X10 uses LONGi's TaiRay wafer and second-generation back-contact cell technology - all busbars sit behind the cell, so the full front face collects light. The result is more watts per square metre, better low-light and high-temperature behaviour, and a cleaner all-black look. Backed by a 15-year product warranty and a 30-year linear power warranty (under 1% first-year degradation, then 0.35% a year - 88.85% output guaranteed at year 30).

Why installers choose it

• 645W at 23.9% efficiency - among the highest in the 72-cell format
• Back-contact cells - no front busbars, better real-world yield and aesthetics
• 30-year power warranty, 0.35% annual degradation
• IP68 junction box, IEC 61215/61730 and UL 61730 certified, 1500VDC system rating

Good to know

• Large-format module: 2382 x 1134 mm, 28.5 kg - check rail spans and handling.
• Voc 53.80 V / Isc 15.21 A (STC) - size strings and fusing accordingly (max fuse 25 A).

Specifications