How can I calculate maximum "healthy" amp draw on a battery bank?

[Naptown]

For longest life of cells and the charge I would go not more than a 20 hour rate.
This will get almost the most (or at least the rated) AH from the batteries. Higher than that and Peukerts Law starts to bite you.

[Shmel]

I have a 250ah 24v battery bank and am interested in calculating what's a sensible maximum amp draw to run.
How can I go about this?
Many thanks.

Is not this stated in battery manual?

[axis11]

Most manufacturers recommend maximum C/8 or 12.5 % of capacity for charge and discharge of FLA batteries. Above that figure and you shorten battery life.

[Handmade Matt]

I have a 250ah 24v battery bank and am interested in calculating what's a sensible maximum amp draw to run.
How can I go about this?
Many thanks.