A7749-P is an auxiliary battery mount. FL1001 is a complete Silverado EV hitch and liftgate system that already includes HiddenPower. Buy the HiddenPower A7749-P on its own when you want under-truck auxiliary battery storage for a supported application. Review the FL1001 TailoredLift Hitch and Liftgate System when you run a 2024, 2025, or 2026 Chevrolet Silverado EV and need liftgate...