Expand your power with the Delta 3 Max Plus Smart Extra Battery, adding 2048Wh of extra capacity to your Delta 3 Max Plus or Delta 3 Ultra Plus. With a 25% more compact design than the Delta 2 Max Smart Extra Battery, it s easier to store, carry, and stack. Built with a long-lasting Lfp battery, it offers reliable performance for years. Enjoy plug-and-play convenience and monitor status in real time via the EcoFlow App. Backed by up to a 5-year warranty, it delivers dependable, portable power you can trust.