100% MPPT controller 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 Suitable for battery types of sealed lead acid, vented Gel, and Lithium battery Colour:As Shown Material:Aluminum shell Package Contents: 1 x MPPT Solar Charge and Discharge Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.