For DJI Staff........Please ask your R&D Department to consider making a Power Adaptor that can take an independent  power brick rather that using the Battery Grip. It would only need to be 1" of the top of the Battery Grip with a plug in cord similar to how you power the Osmo Mobile

Power adaptor

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With a 1/4 20 on the base for attaching to sliders, window mounts etc.

Hello and good day. Thank you for reaching out and for the information you have given. Let me please forward this thread to our DJI R&D Team for further development of the said devices. Thank you for your valued support.