This is the double USB-C 87W PD charger your're looking for.
Charge 2 HyperJuice USB-C PD 100 batteries at the same time.
There is no other USB-C ac power adapter on the market which is able to charge
your MacBook or USB-C battery with full 87W power.
Charge 2 of your HyperJuice USB-C PD 100 batteries at the same time.
Small and lightweight, a great charger for professional photographers travelling.
We highly recommend this double charger to charge several of your USB-C
batteries at the same time.