Harbor Freight has built its reputation by offering budget-friendly alternatives to the products made by big-name brands. Many people like the company's hand tools since they come with a lifetime warranty, but Harbor Freight's power tools have also grown fairly popular. These proprietary battery systems unlock dozens of cordless tools that Harbor Freight shoppers can collect, allowing them the freedom to work on projects remotely, without having to deal with cumbersome power cords. Atlas has the 40V and 80V batteries that are commonly used in heavy-duty outdoor equipment, Bauer has the middle-weight 20V batteries used in it's considerable line of handheld power tools, and Hercules has both 12V batteries for smaller gadgets and its own assortment of 20V batteries. All of these batteries are fairly well-rated on the Harbor Freight website, but that doesn't mean that owners don't occasionally experience issues.