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Product Technical Parameters of SFL-E SERIES 50W 100W 200W 300W 400W 500W with Grade A+ SOLAR CELL: Model Luminous Battery Solar Panel SFL-E 50W 170lm/W 3.2V/4Ah (5V/6V)5W SFL-E 100W 170lm/W 3.2V/8Ah ...