The Airbot Systems Mini PDB is the best Mini Carrier Board companion. It allows to power up to height ESC with max total current @ 180A, and four pairs of small power pads (2 on top side / 2 on bottom) . The mounting hole are the same than the Mini carrier board, so the board can be stacked together, separated by small nylon spacers.
ATTENTION ! : Take care of conductive support and materials around the Mini PDB. Be careful of respecting distance from any conductive material by using the nylon spacers provided and or isolation stuff (e.g PlastiDIP)
Steel scews/bold can be used by taking care it is not in contact on any pads or conductive materials.