I usually use the HOMER software to double check my system design and operational. However I always face a problem when the equipment selected for the project is not in your library.  For example, HOMER has a few battery brand refer to all over the world in their library. If I want to use a new battery which is not inclusive in HOMER library, How should I do this?

When you want to model a battery that does not appear in HOMER’s library, you can add it to HOMER’s library by clicking the New button in the Battery Inputs window and entering its properties.