I Used this with one prototype slider and work fine. Stepper motor work with 12V. The battery have more power and use with my i9 MSI Notebook.

https://www.amazon.es/dp/B077TR3H2R/ref=...UTF8&psc=1

To my camera use one fictícies battery plug to bank.

https://www.amazon.es/dp/B089CPCPDK/ref=...EY9FADZZZ7

Best power supply out there for timelapses is hands down the DJI TB-50 batteries with their dual tb-50 battery thing.
https://www.bhphotovideo.com/c/product/1..._dual.html

Every other battery solution I have tried is garbage. You can also get the 8bay rapid charger and charge 8 of these batteries at once.

Also you can get these tb-50 to vmount adapters as a way to more easily mount them on motion controllers and or tripods- https://www.rockydesign.store/