Power module for Pixhawk when battery is more than 8S

Mostly we use a 6S or less lipo battery for Pixhawk autopilot. but when encounter the 8S or more battery, how to solve the power problem, because Pixhawk supports 8S voltage input maximum.

Here we make a power module for Pixhawk(2.1 or 1), it supports 8S~12S battery.