Incidentally, the solar B-square
technical specs state that a single panel is rated at 5V at 65 mA. The wall charger provided with the Pandora is rated at 5V at 2000 mA. From my understanding, the voltage must match the device specs (or at least be lower, higher voltage is dangerous), which it does and this is good. The current tells you the rate of charge, so 2000 mA would theoretically fully charge a 0% Pandora in 2 hours (battery is 4000 mAh). To achieve this with B-squares, you would need at least 31 of those solar squares running at full sunlight (2000 mA / 65 mA). Or 1 square under 62 hours of full sunlight.