In the realm of Portable Devices (PDs), lightweight, long-lasting, and safe battery technology is key. The Aluminum-Ion Battery with High CE stands out as an excellent candidate for these applications. While portable devices may not require the same energy density as EVs, they do need to be efficient and offer extended use on a single charge. This battery's high CE of approximately 99.7% ensures that a significant portion of the stored energy is effectively utilized, resulting in prolonged device operation. Moreover, its impressive cathode capacity of about 73 mAh g⁻¹ at a current density of 100 mA g⁻¹ allows PDs to run for extended periods without frequent recharging. The non-flammable electrolyte addresses safety concerns, which are particularly crucial for devices that people carry with them daily. Overall, the Aluminum-Ion Battery with High CE is a well-rounded choice for powering the next generation of portable devices .