Hi Eurogarth, Page 47 of the "Everything Mac" booklet that came with my iMac states: "You can replace them with alkaline, lithium, or rechargeable AA batteries." I use rechargeable batteries, and have to recharge them about once per month. However, I always turn the mouse off when I shut down the system. On 2011-27Jul-, at 1:10 PM, Eurogarth wrote: > Just an afterthought... Check the Keyboard and mouse user guides/manuals.. > Not all devices play well with rechargeable batteries. > Garth. > On 2011-07-27, at 10:43 AM, Mary Read wrote: > >> I'm adjusting to life with a wireless mouse. It's lovely in every way except >> for the fact that the batteries last only two weeks before pooping out. Is >> that usual? I would switch it off every night to save <<snip>> Don Green Dragon fergdc@xxxxxxx --- Manage your account options at //www.freelists.org/list/muglo