Replacement charging kit is compatible with all TC5X models: TC51, TC52, TC56, & TC57
Brand: COMPLOGICS

The kit includes:
Charging Cable
Adapter/Shim for use with Exoskeleton
Wall USB Power Supply

The wall charger has the universal USB Type-A output port with 5 VDC/3A. 

The charger is 3.1" x 1.8" x 1.2" in size. 
Its small dimensions help with outlet port clearance by not blocking other charging ports on a wall or power strip outlet.