I've read (below) that you shouldn't power a regenerative motor controller using a run of the mill bench top supply, especially a switching power supply. It's funny because I've owned a lot of motor controllers and have yet to read anything in bold print on the first page that says don't do it. Nor have I had any go bad, but I think that all of my motors are geared so low they don't regen enough to cause a problem..
So what is it safe to use? I'm assuming that a lead acid battery would love to be hooked up to a regen controller, but what about lipos?
This is a great article, http://www.roboteq.com/index.php/app...g-regeneration
No mention of battery chemistry though.