Yes, you can hook a power inverter directly to a battery. Always prioritize safety and check the current draw to prevent any damage to the starting. Ensure your inverter and battery are properly matched by checking voltage, current draw, and required battery capacity. Formula: Battery Capacity (Ah) = (Inverter Power × Runtime) ÷ (Voltage × Efficiency). Perfect for solar installers, energy engineers, and DIY enthusiasts looking to build stable power systems. Proper sizing leads to better energy optimization and improves. But one of the most common questions in 2025 remains: How do you size and pair a battery with your inverter? In this advanced guide, we'll expand on our earlier article, How to Choose the Right Solar Inverter for Your Home, by focusing specifically on battery integration.