Product details:

The new Ego power+ backpack link adds more run time to your Ego tools. Connect the backpack link to any of your handheld Ego tools to reduce fatigue, while providing proper support to accomplish all your landscaping tasks. Constructed with padded shoulder straps, a chest buckle and hook. Carry the weight of the battery on your back not on the tool. Get the bigger jobs done faster with the power+ backpack link.