624 battery to USB adapter - 1.5

This is an adapter for USB charger from 624 or 710 PRCs battery.
You will need:

Some improvements to the first version,
It is FDM friendly design; less parts, free tolerances, less features and more.
You may use self tapping screws instead of creating threads.
Design will make it impossible to connect in reverse polarity.
You may be able to fit other circuits of same PCB size.