Characteristic: 1. 2. 3. 4. Built-in industrial microcontroller: This solar charging controller MPPT ma built-in industrial microcontroller for automatic management, which can store all kinds of parameters set by the user, and the data will not be lost when the battery runs out. 5. Wide Application: This solar panel charging controller ma wide range of applications, can perfectly protect the lithium battery from over-discharge, which is suitable for home, industry, business, etc. Specification: Item Type: Solar Charging MPPT Controller Material: Computer Rated Discharge Current: 15A System voltage: 12 V, 24 V (self-adaptation) Maximum photovoltaic voltage (12 V, 24 V): 18 V solar panel for 12 V battery, 36 V solar panel for 24 V battery. USB output: up to 5 V 2 A Connection: Supports Bluetooth List of packages: 1 x MPPT solar charging controller 1 x Manual