The battery screws on these machines are not a normal 6-pointed Torx screw. Unfortunately the 5-pointed type screw that this machine uses is patented and screwdriver manufacturers will not sell them to the general public. Apple's clearly chosen this screw because they don't want you removing the battery. We'd love to offer the screwdrivers for sale, but haven't figured out any way that we can legally do so. The good news is that in our testing we were able to remove these screws using a 1.5 or 1.6 mm flathead screwdriver, so that's probably your best bet.
I've been looking for this tri-wing screwdriver too. I tried Radio Shack and the hardware store to no avail. The bit they sold me at the hardware store was a #1, way to large for the macbook pro.
However, I've discovered that the required tri-wing is the same as used for Nintendo products, shown here:
However, you might not want to trust what you see on eBay. I also found this:
Here is the google search string I used:
apple triwing|"tri-wing"|"tri wing"
Hope that helps,
1. It is not TORX
2. It is TRI-WING
3. your machine has 2 of these on battery, one on the right hand side over the black plastic cover. one on the actual battery on the left side.
4. search amazon / ebay for TRI or TRIWING or TRI-WING
5. opening that battery will void your warranty there is a black sticker on the left side of your battery "read it please"
7. good luck and please update us
My Dad got me a set of these bits at Sears. Has all the security bits in it as well as the standard bits. Check out the Craftsman 32 piece Security Screwdriver and bit set for $25.
- Includes Torx® tamper proof: T7, T8, T10, T15, T20, T25, T27, T30, T40
- Fraction hex tamper proof: 3/32, 7/64, 1/8, 9/64, 5/32, 3/16 in.
- Metric hex tamper proof: 2, 2.5, 3, 4, 5mm
- Spanner bits: #4, #6, #8, #10
- For Triwing® screws: #1, #2, #3, #4
- For Torqset® screws: #6, #8, #10
- 1/4 in. sq. dr. to 1/4 in. hex adapter
I'd be amazed if it doesn't have what you need, but there are smaller sets:
- Start here: 6 piece bit set, Torx Security $10.
- Craftsman 7 pc. Tamper-Proof Torx Bit Socket Set $30 (Probably not great for computer use.)
- 5 pc. Craftsman Tamper-Proof Torx Bit Socket Set $40 (Again, probably not good for computers)
And if it comes down to it, you could try drilling out the security pin and using a standard Torx bit.