The buckconverters are rated for A output. 모듈이 최대 전력 W를 생산하면 컨버터의 출력은 wV,A로 여전히 A보다 낮습니다. power of W the output of the converter is at wV,A wich is still below A. I chose to get two V sealed lead batteries because they add up to V, are easy to charge, cheap and robust.