156mm( 6" ) Polycrystalline Solar cell Material: Polycrystalline, Multi-polycrystalline Dimension: 156mm* 156mm Busbar: 2line Front: silicon nitride anti-reflection coatings 2 silver bus bar Back: Full surface aluminum back-surface field 2 silver-aluminum back contact strips Electrical Performance work life: 25years Efficiency: 14% -17.19% Power: 3.4-4.2W Max Power Current: 7-8A Min Power Current: 6.8-7.8A Short Circuit Current: 7.7-8.5A Max Power Voltage: 0.48-0.53V Open Current Voltage: 0.6-0.63V Package: 1000pcs one carton box, each 100pcs sealed in inner box Benefits of our cells: High Cell-To-Module( CTM) ratio More power Excellent low-light level performance Offers broader geographical and climate application Quality visual and electrical characterization Provides long-term stability& reliability