It is made by EGO.
https://www.homedepot.com/p/EGO-16-i...1604/206587968
I bought into their system as they have quite a few tools that utilize the same battery system.
https://www.homedepot.com/b/Outdoors...qu%3A%7Bego%7D
I use the hedge trimmer attachment with the Power Head system and it is about my favorite lawn tool of all time. Cuts through brush and clears an area like it is nobody's business.
The batteries tend to hold a charge long enough such that I am worn out long before the battery gives out.
BTW, in case you don't already know, get a Home Depot credit card. That gives you an automatic one year return on anything you buy from them using their card.