Magic Mouse won't turn on AT ALL.

Thanks! I had the same problem. Apparently the battery door is going south. Pressing on it connected the batteries.

I actaully need to amend my previous comment.

For whatever reason, the battery door compartment is not holding the batteries in place. The mouse is about 3.5 years old and sees average use.

I wound up taking some thin carboard and placing on the door before latching it back on the mouse. That seems to be pushing the batteries into the compartment enough to maintain contact.

While I'm not wild (and a bit embarrased) about having to do such a clumsy fix, it is keeping the mouse working and saving me $60 in the process. Taking a bit of foam padding or a sponge and gluing the that to battery door may also work.

I had the same issue...tried different batteries, regular, rechargeables, etc... until I decide to shine a flashlight into the battery compartment...

Check the positive end of the batteries connector. With time, some residue will build up, reducing the contact zone...

a bit of Isopropyl alcohol on a cotton swap, rub it against the connectors, voila... clean connection again...

Cheers

I fixed mine by spraying aftershave on a tea towl then wiped the battery connectors. Sorted

Thanks for posting. You saved me an hour drive to the local Apple store. 🙂 It turns out this was the issue I was having. Duracells do seem to have shorter positive terminal height above the battery top shoulder than the CVS store brand I had been using, and when I put in new Duracells, the mouse wouldn't power up. The fix was to fold some aluminum foil several times and cut off 2 little squares and place this on the negative terminal side. This gives enough added length to force the positive terminals up into the holes far enough to contact the pads inside the mouse. This is really a glaring design flaw on the part of Apple, if you ask me.

Hello,

I am here for the same reason, but I also figured it out as well. many people are right, the Magic Mouse, I have noticed today that it does not like Rayovac, or Duracell. But I found that Energizers and Eveready batteries work fine, I found the same issue, that the positive tip on the batteries that didnt work were shorter than the others. This could be because after using the ones with the longer tip caused the connection plate to be pushed back, causing no connection with the shorter ones, I use to be able to use Rayovac in my mouse. I did find a trick in how to get the Duracell batteries to work, in fact I am using them now after having to adjust their position within the mouse. To get Duracell to work, you must angle them the negative end closer to the bottom removable plate, and a lite tap may be required to get them to slide into place so they power the mouse.

I was thinking on using a couple small strips of aluminum foil folded and placed in the hole for the positive tips to ensure connection to the internal plate, I may still use that idea, if I continue to have an issue with different batteries.

I hope this has helped some, I was slightly annoyed when I noticed the issue.

Hi Buddy, I recently had the same problem with the Magic mouse. After I read all the comments and even tried their advices there was no doubt the issue here was size. My solution to this stupid problem was not to change the batteries for longer ones, nope, I simply put a tiny piece of paper on the battery set and placed back on the cover et voilá! Green lights, so that's it, all you need is to completely fill up the space between the cover and the batteries.

I had the same problem too, having been turned off for a while, my mouse wasn't turning on and my green light wasn't lighting up or blinking, nomatter what batteries I used.

I removed the batteries, and saw there was some dried on battery fluid on the contact.

If you carefully scrape this off, and replace the batteries, it should work.

Also I've never had any problems with specific batteries - any AA batteries have worked for me in the past, alkaline and rechargeable.

Good luck!

Thanks Carlos_Fernández

Sometimes you have to bang the mouse on its head against the desk or table to get the positive battery tips to connect.

I found a fix! Take some aluminum foil and make two squares. Put each piece of foil between the battery and the negative side of the battery compartment. Make sure that each piece of foil does not touch, or you'll complete the circuit! If you've done it right, you should see the green light turn on. If not, leave it how it is for a bit and then check to see if the batteries are warm. If so, make sure the two pieces of foil aren't touching. If the batteries are not warm, try getting some fresh batteries. I hope this helps! If you need further help, feel free to let me know! I've fixed tons of these.

I appreciate what you are saying but this is not how your mouse should behave. I suspect you are using sub standard batteries, either dime a dozen sale items or unbranded. Quality batteries should not need padding. If they do, and the mouse/ keyboard is less than twelve months old, return it for exchange.

I am using Duracell batteries, so I'm pretty sure they're considered quality batteries. Whatever the case, the solution worked for me and hopefully it will work for others until they can find batteries that fit the compartment (I haven't had any problems with Energizers, however I don't have any of those.)

Yes they are considered quality batteries and that underlines what I said. This is not how an Apple mouse should behave and it should have been exchanged from the moment it became a nuisance, always subject the guarantee period. Stuffing tin foil in the compartment may give temporary relief but it is not a reliable long term solution. I guess one could argue all night about the length of a guarantee but most mice, and I mean most, do not have this problem. So replace it and be happy; it doesn't cost a fortune.

If I could replace it I would, but I can't afford it right now. I like my current mouse, and if it works it works. My posted solution was only for the people who don't have the liberty or the money to go out and buy a new mouse for $69.