Works ok, can be kept as emergency tool. Cant rely completely as average quality and current output not specified techincally . Also overpriced .200 rs is fine for this product , which you can find easily in nearby market. Used it for my tyre inflator it showed false reading with this connected to battery. Tyre inflator shows correct reading when connected to car ciggerate lighter. This is major factor to be considered for me not to rely on this completly .as i said ok to keep it as emergency spare. High price considering its connector quality and cables and overall material.