The NEW Flex 24v Starter Kit includes a 2.5Ah Li-ion battery and 160W fast charger, making it convenient for powering your tools and equipment. The Flex FX0411-1A model ensures compatibility with the brand's products, providing a reliable power source for various tasks. This starter kit allows you to charge one battery at a time, making it a practical choice for those who need a reliable and efficient power tool accessories solution.