400W 15A DC Non-isolated Step up Boost Module 8.5 -50V to 10-60V Adjustable Voltage Output To supply power to your electronic equipment, you can set the output value according to your system voltage. As a vehicle power supply, it can supply power to your laptop, PDA or various digital products. It can be used for solar panel voltage stabilization, charging batteries such as lithium batteries, and driving high-power LED lights