Upgrade your MACFOX X1S/X7 e-bike with our 48V 10.4Ah 5pin battery upgrade kit and say goodbye to range anxiety! Specially tailored for MACFOX X1S and X7 models, the kit comes with a 5pin connector that perfectly fits the original vehicle interface, allowing you to effortlessly install a second battery and build a dual-battery system that doubles your riding range. Whether you're commuting to work, exploring country roads, or enjoying weekend adventures, you can ride farther without worrying about running out of power. The package comes with a high-performance 48V 10.4Ah lithium battery, a custom-fitted battery base, and a waterproof rain shield – everything you need for a complete upgrade. The battery uses premium lithium-ion cells with a long cycle life, and the integrated BMS ensures safe and stable operation. The package includes a 48V 10.4Ah lithium battery, a dedicated mounting base, and a rain cover. Installation is simple and requires only a few screws, with no need for electrical modifications. Note: This is a battery upgrade kit only. Charger is not included.