TL;DR: The Survival of Your Power Grid Battery failure is the most common point of failure in off-grid power systems. **Maintenance** is about preventing **Sulfation** (in Lead-Acid) and **Capacity Fade** (in Lithium). Lead-acid batteries require regular **Equalization Charges** and distilled water top-offs to maintain their **State of Health (SOH)**. LiFePO4 batteries require "Top Balancing" and strict voltage range management. Reconditioning is possible for lead-acid throug