Battery Chemistry for Reliability

## Lithium vs. Lead: The Invisible Cost In an off-grid AI lab, the battery is the most expensive component. Choosing the wrong chemistry is a costly mistake. ### Why LiFePO4 is the Gold Standard Lithium Iron Phosphate (LiFePO4) has replaced traditional Lead-Acid and Gel for server loads due to its superior power density and safety profile. | Metric | Lead-Acid / Gel | LiFePO4 (LFP) | | :--- | :--- | :--- | | **Cycle Life** | 300 - 500 | 3,000 - 6,000+ | | **Usable Capacity** | 50% (DoD) | 95-100% (DoD) | | **Efficiency** | ~80% | ~98% | | **Weight** | Heavy (70lbs for 1kWh) | Light (25lbs for 1kWh) | ### Thermal Management & Degradation AI gear generates significant heat. LiFePO4 batteries are sensitive to high temperatures (above 45°C / 113°F). - **Placement:** Keep batteries near floor level (coolest air). - **Charging:** Never charge LFP batteries below 0°C (32°F) unless they have internal heating elements. - **Ventilation:** Ensure your server exhaust is directed away from the battery bank to prevent accelerated capacity fade.