This "backpack" is two parts that snap together to hold a LiPo battery to the back of a Circuit Playground board.

There is clearance between the backpack and the board so you can still clip on to any of the pads. The posts that clip to the board are small and spaced so they won't obstruct any pads either.

This is a really secure little assembly, and great for holding your battery to your project. If your printer isn't good at small overhangs, you might consider using minimal supports - the locations should be pretty easy to clean.