  I don't know. We haven't validated it to function in the server.   No, your warranty would not be affected in any way. The only issue you need to be aware of is that if you encounter problems related to 3rd party products in the server then troubleshooting may require it to be removed. You may encounter a lot of resistance with getting HDDs replaced when using a 3rd party controller.
Is there a RAID controller compatible with the R710 which does not use battery but instead Capacitor plus flash? 
Could i swap out the RAID controller in my Dell R710 with one that does not 
rely on a battery at all?