WIO Battery Chassis

My Wio Terminal Chassis - Battery (650mAH) has just arrived. I wanted to connect a grove gps module through the 40 pin header at the base to see my gps location on the move. However if I connect the module to the 5v and gnd I get no power to the module. Also if I connect the terminal plus battery though the type-C connector on the battery to my PC I cannot connect to it via IDE - error no board connected. If I connect via the type-C on the wio terminal (with the gps module attached) then the module power light and the terminal led flash continually (hiccup?). It there a way to use my gps module on a battery powered terminal? Thanks.