1kW LiFePO4 batteries are widely matched with modern agricultural IoT devices to power field soil detectors, water-fertilizer machines, IoT cameras and irrigation solenoid valves for off-grid power supply. Adapted to high temperature difference and high humidity farmland environments, the battery is waterproof and corrosion-resistant, retaining over 80% capacity in extreme weather. Its modular design supports solar energy storage networking to realize self-charging, free from municipal power wiring limits. Maintenance-free and long-cycle, it reduces battery replacement frequency. It is applicable to remote planting areas including mountain farmland, open greenhouses and ecological orchards, boosting intelligent and energy-saving agricultural development.