Longi 620W Solar Panels offer high efficiency and reliability. With 144 cells, 2382mm x 1134mm size, and 28. 5kg weight, they are ideal for various applications. com. Specifications included in this datasheet are subject to change without notice. (20240407 BetaV02)DG . The LONGi 620w Bi-facial Hi-MO Solar Panel is a high-performance, utility‑grade photovoltaic module designed for large‑scale solar installations, commercial rooftops, and ground‑mounted solar farms. Current market size estimates exceed $10 billion, with projections indicating a compound annual growth rate (CAGR) of. . Hi-MO 7 is LONGi's latest generation of high-efficiency modules designed for the utility market. The module uses SMBB welding technology including LR5 72HGD (2278mm*1134mm) and LR7 72HGD (2382mm*1134mm ) two types product.