I use a V-type battery specifically for video equipment. It provides 200W output for short periods, which works fine. The downside is that it reaches 16.8V when fully charged, which is too high. Therefore, you can't charge it completely or you need to add a DC-DC converter.
Then, the old version without 3C certification was really annoying, and I wanted to put a new sticker on it. The battery is 135Wh, but its size is the same as the 98Wh one. When I encountered a situation where a high-speed train checked the capacity, the 98Wh model worked fine.
Charging via PD allows for a 100W charge, fully charging in 2 hours.