def main():
    renogy = RenogySmartBattery('/dev/USB0', 50)
    print(renogy.volts(51))
    print(renogy.amps(51))
def main():
    renogy = RenogySmartBattery('/dev/USB0', 50)
    print(renogy.volts(51))
    print(renogy.amps(51))