HERE IS A QUICK VIDEO OF ME TESTING MY SOLAR CELLS AFTER TABBING THEM. I HAD 14 CELLS NOT PRODUCING ANY VOLTAGE AND THE EBAYER I GOT THEM FROM WAS GOOD ENOUGH TO EXCHANGE THEM. SO NOW I HAVE TO WAIT FOR THEM TO GET HERE. UNTIL THEN I TABBED 30 CELLS TOGETHER AND WANTED TO CHECK THE POWER OUTPUT. I WAS GETTING 16 VOLTS AT 3.6 AMPS, THATS 57 WATTS! SO I HOOKED MY GRIDTIE INVERTER UP TO SEE WHAT WOULD HAPPEN. THE HIGHEST I GOT WITH THE GRID TIE WAS 32 WATTS AT ONE TIME. NOT TO BAD. 30 CELLS, 30 GRID WATTS. I HAPPY WITH THIS TEST.