Thay cua Bos la tot roi, chenh nhau vai ampe k sao, bon hang no dat hang loai dac chung de ai k bit thi cu phai mua dung loai nhu theo xe, ve nguyen ly thi du 12V nhung chenh ampe thi la dung luong su dung, ampe cang lon thi su dung cang lau nhung nen lap loai ampe lon hon 1 chut so voi ac quy...