Hi again and thanks for that information.
OK - you will need either a T5 or T6 (torx) screw driver to get those screws out.
You MAY be able to find these at either a local hardware or electronics store, and they sometimes come as "kits" that have multiple screwdrivers AND other tools for helping to get devices such as these open without damage.
Here is a link to one such kit - listed on Amazon - as an example.
Click Here --> http://amzn.to/1NKpN4e
I also have a link to a video that shows how to replace this particular battery - if you want to look at it.
Click Here --> https://www.youtube.com/watch?v=SkfujctopKQ
Please give that video a try and let me know if you can find those tools to do the job. And please let me know if you have any more questions.
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