This is a very trivial question in my opinion, but I was thinking about what a battery would be classified as. In the physics world, batteries are often used to represent a voltage source.

I feel like that a battery should be considered a dependent voltage source since a batteries voltage is dependent on the amount of current the load draws within a certain amount of time. An ideal battery wouldn't have this issue. But to me, batteries aren't independent sources like power supplies, which will always supply a fixed voltage (as long as it is CV mode).

The question is do you think batteries are independent voltage sources or dependent voltage sources?


1 Answer 1


there are many different battery models some can be as simple as a voltage source with series resistance some are more complicated.

You're correct in thinking that there is a dependent source in more complicated battery models the lifetime is dependent on the current that has already been discharge through the battery. Such as shown in the circuit below:

enter image description here.
Source: https://www.edaboard.com/showthread.php?214394-how-to-make-a-battery-model-of-NiMH-on-HSPICE

The model uses in RC circuit to model the capacity of the battery and the current withdrawn from the circuit.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.