If I shoot on a slow charge, I can get about 10 hours of continuous shooting at 4K60p, but it stops in less than 30 minutes on a PD charge and 60 minutes on a fast charge.

For slow charging, either the battery has to have a low output or the cable has to be for slow charging, which is very difficult to find.

So please create a charging option that slows down the charging speed.

Hi, there! Thank you for sharing your thoughts with us. We'll forward your idea to our relevant team for consideration. Thank you for your choosing DJI!

A charger without the PD (or QC) circuitry would provide a slow charge. In fact, most chargers don't have the PD (or QC) circuitry, I had to read the specifications of each unit before I bought one, and most didn't have the circuitry. That said, if you are getting this level of difference, it's something that DJI really should look in to and advise on - good to raise it.