... storage during the day and at night through the intelligent control system lighting lamps to achieve power.Technical Parameters: Name40W ... -charge protection, over-discharge protection, lightning protection, light and time control functions12V 10A24V 10ALED LightsLife of more than 50,000 hoursDie ... wind speed: 3.5 m / s or more, annual sunshine time: 4.5 hours / day, temperature range: -30 °C -50 ...