Need a Battery Bank Block

Hi ,

I am looking for a Battery Bank model which can be connected directly to the Vout of a Converter.The output from converter is just one signal that should be fed in to a battery bank block whose parameters can be set according to user need.So that power can flow in both directions. I have tried battery block in Simpower systems but it got two inputs i know its a basic question but i need some help regarding this

I think my question is clear to all out there if not please comment i will try to get some screenshot and explain it better.

Thanking YOU