Features: 1. The 100A MPPT solar charge controller adopts innovative MPPT technology, and the tracking efficiency is as high as 99%; if you are not familiar with Mppt technology, please refer to the information: There are many kinds of MPPT technology, our solar controller Mppt technology is the largest detection Charge current, not boost or solar panel voltage auto charge. 2. The multi-function LCD screen directly displays system information; the controller is 12V/24V automatic adaptation, connect the battery first, then connect the solar panel, when using it for the first time, please ensure that the battery has enough voltage, the controller to identify the correct battery type 3. Reliable protection: overvoltage, short circuit, overload, overcharge, overdischarge protection functions; auto focus MPPT tracking charging, high charging efficiency, uninterrupted detection during charging, bidirectional focus tracking. 4. Industrial-grade main control chip, 16-bit AD sampling accuracy, accurate real-time display of temperature charging current and discharge current, and power generation at a glance. Note: Please pay attention to the connection method, connect the battery first, then connect the solar panel (the order cannot be reversed). Specifications: Weight: 322g Size: 8.9*4.3*2cm Material: Plastic Includes: 1 x Solar Charge Controller t reverse order). Specifications: Weight: 322g Size: 8.9*4.3*2cm Material: Plastic Included: 1 x Solar Charge Controller