LONGi Hi-MO X10 645 W

LR8-66HVD-645M · Hi-MO X10 Scientist LR8-66HVD (HPBC 2.0 back-contact, bifacial dual glass)

BCbifacial132 (6x22) n-type back-contact (HPBC 2.0, 0BB)

A 645 W BC, bifacial panel, 23.88% efficient, warranted to give 88.85% of its power after 30 years.

Where to buy in Durban

No Durban shop we checked lists this exact model online.

Durban shops that stock this brand (ask them for this model): Central Solar Supplies (KwaZulu-Natal branch).

Score 86/100, number 1 of 10 models listed here. Each bar shows where this panel sits between the weakest and the best of the 10 on that point.

Efficiency 23.88 %30 of 30 pts

Heat loss (Pmax temp. coeff.) -0.26 %/°C20 of 20 pts

Power guaranteed at the end 88.85 %20 of 20 pts

Yearly degradation 0.35 % a year10 of 10 pts

Product warranty 15 years6 of 15 pts

Salt-mist rated (IEC 61701) not stated0 of 5 pts

Power (STC)	645 W
Module efficiency	23.88 %
Vmp / Imp	40.88 V / 15.78 A
Voc / Isc	49.62 V / 16.46 A
Power tolerance	0~3%
Temp. coefficient Pmax / Voc / Isc	-0.26 / -0.2 / 0.05 %/°C
NOCT / NMOT	45 °C
Cells	132 (6x22) n-type back-contact (HPBC 2.0, 0BB)
Size	2382 x 1134 x 30 mm
Weight	32.5 kg
Glass / frame	Dual glass, 2.0 + 2.0 mm semi-tempered / Anodized aluminum alloy
Load front / back	5400 Pa / 2400 Pa
Max system voltage / fuse	1500 V / 35 A
Product warranty	15 years
Power warranty	30 years, 88.85 % at the end
Degradation: first year / yearly	1 % / 0.35 %
Bifaciality	75 %
Salt mist (coastal)	not stated
Certifications	IEC 61215, IEC 61730, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, IEC 62941

Source: maker's datasheet (BGV03 20260127 (LR8-66HVD 640~670M)), checked 2026-11-06.