Hop-ups - Schematics::

Walkera 4#3a/b 4-in-1 Charge Port Schematic
Author: EQMOD
Author Email: EQMOD at RCGroups
Specs: Unknown
Revisions: PicooZ,Walkera 4#3a/b 4-in-1 RX
Downloads available:
Notes: Here is the charge port schematic as installed on the 4-in-1.