mức hiển thị 25%,50%,75%,100%
3S12.6V( 25%,50%,75%,100%)
1S 4.2V( 25%,50%,75%,100%)
4S16.8V( 25%,50%,75%,100%)
6S25.2V( 25%,50%,75%,100%)
7S29.4V( 25%,50%,75%,100%)