The relationship between the inverter and battery is symbiotic: the inverter uses the stored energy in the battery to power devices, while the battery provides the energy needed for the inverter to convert. 1. Energy Storage and Conversion
[pdf] Before you decide to pair a lithium-ion battery with your existing inverter, it’s essential to consider several factors. These include the inverter’s voltage, charging algorithm, and overall compatibility with lithium-ion technology. Not all inverters are created equal.
[pdf] $280 - $580 per kWh (installed cost), though of course this will vary from region to region depending on economic levels. For large containerized systems (e.g., 100 kWh or more), the cost can drop to $180 - $300 per kWh.
[pdf] 
