Safe operating area for different types of battery chemistry?
I have had a lot to do with a range of battery types in recent years. No one source covers everything or is perfect in it's treatment of a given chemistry, but I have found that Battery University usually does a good job of providing accurate, detailed and useful  information. 

A look at Battery university's home page will immediately show you that this is  a better than usual place to find battery information.



Nickel based

Lead based

Lithium based

And much much much more ...

Manufacturer's pages are also an excellent source, although harder to find specific chemistry related material.