... power *Long-term electrical stability *Best quality 156mm poly solar cell in stock,solar cell with good quality,3BB PHYSICAL Dimension: 156mm x 156mm ... Front(-) Three 1.5mm wide bus bars (silver)with distance 52mm, acid texturized surface with blue silicon nitride AR coating. Black(+) 3 ... 17.1Kg. 156mm poly solar cell in stock,solar cell with good quality,3BB