- Rule of Thumb: The inverter's rated power (kW) should align with the battery's capacity (kWh). - Oversizing the battery can lead to underutilization, while undersizing may limit performance. An inverter is the heart of any solar and storage system, converting the direct current (DC) power from your batteries into alternating current (AC) to power your property. When using high-performance lithium iron phosphate (LiFePO4) batteries, selecting the correct inverter is not just a. Finding the right inverter to pair with lithium batteries can improve efficiency, safety, and reliability for solar storage, home backup, and off-grid systems. In this blog, I'll share some tips on. The ECO-WORTHY Home Power Station combines a 5120Wh LiFePO4 battery with a built-in MPPT off-grid inverter capable of 5000W continuous output.