Ovonic 120C 22.2V 1600mAh 6S lipo battery is the updated version of 100C 1550mAh 6S, giving you more capacity and higher discharge rate than 6s 1500mah. If you need 6s 120C batteries with other capacity and weight, 120C 1300mAh 6S and 120C 1200mAh 6S are great for you.