* Top unit: Itel Hybrid Inverter
* Converts battery DC power to household AC power.
* Can charge batteries from the grid and, in many setups, from solar panels.
* The display shows system status, battery level, and power flow.
* Bottom unit: Itel ESS Battery
* Label visible: 51.2V 200Ah
* This is likely a lithium iron phosphate (LiFePO4) battery.