BOOST CHARGER: This boost module can adjust voltage power, it is also a boost charger, which you can use with a 12V power Module to a higher voltage storage battery, for example a 24V battery. VOLTAGE NEED BELOW TO RATED CURRENT : Power Module for your electronic equipments, it can work normally as long as you adjust voltage as needed and current should not exceed the rated current. REQUIREMENT OF VOLTAGE: DIY one adjustable output car power Module , only need to input 12V, then it can output continuous adjustable voltage; note that the output voltage cannot be lower than the input voltage. GOOG CHOICE FOR YOUR PROJECT: This module would be the best choice if your project has 10-18V input while system board need 24V with big power, no need to debug, easily to achieve hight efficient high-power voltage boosting. CAR POWER MODULE: Universal car power Module for laptop; Connect input to 12V power Module , then adjust output voltage to fit your laptop., Weight: 0.1322773572 pounds, Manufacturer: Hilitand