Feature: Intelligent Maximum Power Point Tracking technology Built-in DSP controller with high performance Automatic battery voltage detection 12V/24V/36V/48V Three-stage charging optimizes battery performance Multi-function LCD displays, Reverse polarity protection of solar panel Overcharge protection, Can be mounted easily Suitable for battery types of sealed lead acid, vented Gel, and Lithium battery Package Including: 1PC MPPT Solar Controllers 1PC User Manual (English)