Husqvarna 40-B140X is a lightweight 36V battery with 4 Ah capacity, optimized for hedge trimmers and small top-handle chainsaws. Like all Husqvarna BLi-X batteries, it's built with state-of-the-art cell technology offering excellent weight-to-capacity ratio. The robust design fulfills IPX4 for all-weather use with all professional Husqvarna 36V products. The ActiveCool system cools down the battery during operation and charging. Ready to connect with Husqvarna Fleet Services.