Hi Doug,

I don't know of any others, but I do know that the Mobee works well for certain and the replacement battery pack I had to buy after a few years was easy.to get. This one is $36:

http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=Mobee&rh=i%3Aaps%2Ck%3AMobee

It'a little tricky to get the battery pack in all the way so the mouse bottom cover closes all the way but don't force it, just noodle around a little. Play with the black latch on the mouse. Also, if you get an iPhone or iPad usb wall charger with two ports, you can charge your phone and the magic mouse while the computer is off. And free-up your computer USB ports.

Last edited by slolerner; 06/05/15 02:15 PM. Reason: Clarity