Need to replace the battery on my NX80

[little jack]

Both my NX80 and NX73 need to have their batteries replaced. I found a source for the batteries but there is an issue with getting at the battery compartment. I need to purchase the five pointed tamper proof torx bit to remove the special screws. I am assuming that the two screws on the back and the two screws on either side toward the top are the ones needing to be removed in order to take the back off. Of course the one Phillips head screw on the lid will be removed first. The whole kit and kaboodle including batteries and Torx bit set should run about $145.00. Seems a bit steep to replace batteries, but what choices do we have. Has any one replaced their battery and if so, what tips can you pass along?
TIA
Bob

[VincentChon]

Did you try to use flat screwdriver to five point screws ?
And Below is my listing on ebay, it include the battery for NR/NX/TG/TH and 3 blade screwdriver, 5 blade screwdriver wasn't sold already, because the quality is bad.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=380083034099

[XGlow]

I have ordered batteries from this site 3 times in 4 years. Their service was fast and excellent. I have two Clie TJ-37s. The batteries seem to last a little better than a year. They have quite a selection of Clie batteries and they also threw in a small handful of torx and regular screwdrivers. I ended up using the small flat blade driver on a tri-tipped screw. No Biggie... It worked and it only took a few minutes.

Check them out! Batteryship.com (http://www.batteryship.com)