-fa-battery_3"></i>;
          if (batteryOutput.chargePercent > 40)
            return <i className="nf nf-fa-battery_2"></i>;
          if (batteryOutput.chargePercent > 20)
            return <i className="nf nf-fa-battery_1"></i>;
          return <i className="nf nf-fa-battery_0"></i>;
        }

        // Get icon to show for current weather status.
        function getWeatherIcon(weatherOutput) {
          switch (weatherOutput.status) {
            case 'clear_day':
              return <i classNam