ZG-S95 V Mount Battery with D-Tap BP PD USB C In/output

ZG-S95 V Mount Battery with D-Tap BP PD USB C In/output
digitalfoto.cn/zg-s95-p00814p...

[@BrandonColePhotography]

I have the Sony A7SIII. If i am charging thru PD Out it doesnt charge. If I am charging thru PD In/Out it works fine and I have 2 new batteries.. Do you know why?