Solar Battery and Inverter Specifications: What to Check

Compare usable energy and power separately

Battery energy is commonly stated in kWh; inverter power is stated in kW or kVA. Energy indicates how much electricity may be stored, while power limits how much can be delivered at once. Check the usable capacity, permitted charge and discharge rates, continuous output and peak output instead of comparing only a headline number.

For lithium batteries, confirm the exact chemistry, operating limits, battery management protections, communications protocol and approved inverter compatibility. Do not assume that two products described as LiFePO4 will automatically work together.

Check system compatibility and protection

Review the inverter's PV input range, maximum charging current, grid and generator inputs, phase configuration, changeover behavior and monitoring options. The installer should confirm conductor sizing, overcurrent protection, isolation, earthing and ventilation according to the equipment manuals and applicable local requirements.

Ask for the exact model datasheets, warranty terms, installation manual and any applicable test or conformity documents. Certifications must be verified for the model and destination; they should not be inferred from a product category or a supplier logo.

Plan for the whole service life

Understand commissioning, firmware or monitoring support, spare parts, warranty claim process and end-of-life handling. A suitable solar energy storage system is not just a battery: it is a compatible, installable and supportable set of components.