The Sony NP-F970 Camera Battery Charger (SmallRig 4086) has room to charge two Sony NP-F970 batteries simultaneously.
With the help of the integrated USB-A charging cable, a Micro-USB input, and a USB-C input, you can charge the batteries via mains power, your laptop, power bank, or car charger.
This way, you can charge your batteries anytime, anywhere.