Husqvarna Flexi Battery Belt is ergonomically designed for users to comfortably carry spare batteries and accessories easily. By placing the weight on the user’s waist rather than the arms, it reduces fatigue and improves productivity. Durable and convenient with five fixing points for carrying up to 3 batteries. The Adaptor Kit comes with Battery Belt, 1 Bli Carrier, 1 BLi Carrier with Adaptor and Accessory Bag. Please note a software update is needed for pre-2017 products.