This 11.1V, 4200mAh 3S LiPo Battery from XProHeli is a smaller battery, weighing approximately 11 ounces, that is compatible with the XP2 Quadcopter. The reduced weight compared to the normal 6400mAh battery allows you to safely increase the aircraft's payload capacity without risking damaging the PMU or motors. It provides the XP2 up with up to 9 minutes flying time, depending on use.
In addition to the XP2, this battery may be adapted to other RC applications calling for the same specs. It will charge on the same charger as the 6400mAh battery, as well as many other LiPo balance chargers for RC models.