I work in the film industry and my question relates to powering our cameras.
Our cameras are generally powered by block batteries that provide either 24v or 14v power - an example here (VCLX). Some cameras only accept 14v whereas others accept 14v and 24v power. The Arri Alexa Mini is a common camera that accepts both (Alexa Mini)
My questions is this; when powering from 14v a full battery will generally show on the cameras as 16V and the common cut off point for changing the battery is about 12.5v (varies depending on exact camera and configuration).
However when power the same camera with the same battery from the 24v output the general reading from a fresh battery is approximately 26v, the common cut off point is about 21.5v. Why is this?
Why for example can you not run the battery down to 12.5v when powering from 24v?
As is probably evident, my understanding of electronics and power is basic and I'm trying to improve it.