MPPT是Maximum Power Point Tracking（最大功率点跟踪）的简称，MPPT控制器能够实时侦测太阳能板的发电电压，并追踪最高电压电流值(VI)，使系统以最高的效率对蓄电池充电。(MPPT Maximum Power Point Tracking (maximum power point tracking) referred to as the MPPT controller to power voltage real-time detection and tracking of solar panels, the highest voltage current value (VI), the system with the highest efficiency of battery charging.)