This 2-cell Lithium Polymer 450mAh battery pack is great for tons of applications, and is a great option for tons of smaller drones and airplanes! Features a JST connector on the discharge leads and standard JST-XH balance leads. 40C continuous discharge rate of 18 amps. DIMENSIONS: length: 53mm (2.08 in. ) width: 30mm (1.18 in. ) height: 9mm (0.35 in. ) Weight: 30g (1.05 oz)