12 V No IDle AC Unit , No Gas Runs Off Batteries

🧊 How the Off-Grid A/C System Works in Your Truck 🛻 This system keeps your cab cool without running your engine, saving you fuel and engine wear. ⚙️ System Breakdown: 1. While You Drive: • Your truck’s alternator charges your main batteries. • A DC-to-DC charger pulls power from those batteries and charges a separate LiFePO₄ (lithium) battery system in the back. 2. When Parked: • Your truck is off. • The A/C runs directly from the lithium battery, not the truck’s power. • You stay cool all night — no idling needed. 🔋 Battery Options: • 300Ah battery: good for 6–8 hours of cooling. • 600Ah system: good for up to 14–16 hours, ideal for hotter areas or longer rest periods. 💰 Why It Saves You Money: • Idling burns 8 gallons of diesel per night = $30–$40. • This system pays for itself in 2–3 months just in fuel savings. • Also keeps your DEF system cleaner by avoiding engine idle. 🔧 Two Setup Options: 1. Direct to truck batteries – simple install, lower cost, uses your truck power. 2. Off-grid battery setup – full independence, longer runtime, no truck drain.