@CRZen-it By posting all over the place in different threads I can't work out what you are doing.
Keep everything in one place so we can help you.
So to recap.....
What is wrong with your current pack? We need exact details.
What fault codes do you have? These are vital.
Can you get an HDS IMA data list printout? This is highly desirable to help fix it.
Have your read the threads that were linked earlier?
You can't replace a Lithium pack with a Nimh pack unless you want to deal with the IMA code issue that will result.
See that previously linked thread for details.
We could possibly help you fix your lithium pack if we knew what is wrong with it.. See my questions above.