do you find any solution for batch invoice printing ?
That capability is not available.
Having a proposal under the ideas list doesn’t mean you will get it in a few hours. It all up to the developer and his priorities that, right now, as we can understand, are the new API and getting custom reports completed together with bug solutions.
Please search the forum before asking questions.
There has been a topic listed for this feature since March 2016
Batch Printing Sales Invoices