Unable to link keypad after changing batteries

mid year 2012 imac desptop.
Thanks,
Ron

Did all that. That doesn't talk about the wireless numerical keypad. I've installed new batteries before when they went down. this time it wouldn't connect. the wireless mouse and keyboard are ok. If I push what i think is a reset buton on the back of the numerical keypad the activity light on the front flashes for a while then just stops. Me thinks its not seeing the bluetooth is activ and detectable. It shows up in preferences/bluetooth but its not lite up.
Thanks
Ron

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Apple wireless mouse does not reconnect after changing batteries

The wireless mouse on my iMac quit working after I changed batteries. There was no response to mouse clicks, or movement, or scrolling. Eventually I connected a USB mouse, did an orderly shutdown of the system, rebooted, and the mouse started working again.
The long story ...
The first time I encountered this problem was the first time I changed batteries in the Apple Wireless Mouse that came with the iMac 3.06 GHz Intel Core 2 Duo I purchased in January 2010. (The OS is 10.6.2 without updates.) I switched the mouse on, the green light on the bottom of the mouse blinked for awhile (at least a minute), but clicking or moving the mouse got no response. The new batteries were Eneloop 1.2v rechargeables. I tried clicking and moving the mouse several times over a period of ten or fifteen minutes, nothing.
I started searching the web for clues about what to do and maybe a half hour or so later I tried the mouse again and it worked.
A few days later I wanted to see if the problem was reproducible. I don’t remember now whether I removed the batteries and reinserted them or just power cycled the mouse, but again the mouse quit working. The green light would blink for awhile, about a minute, then would go off completely. I took this to mean the mouse was searching for the Bluetooth network, not finding it, and giving up. Over the period of half an hour or more I tried switching the mouse off and back on several times. The green light would blink, but nothing more.
I started searching for tips about reconnecting an Apple wireless mouse after changing batteries. I ran across a (2005) discussion on MacRumors forums titled “Wireless mouse troubleshooting problem...” The symptom was a little different, the mouse was partially functional. In this discussion some contributors thought weak batteries could be to blame. So I replaced the rechargeable batteries with new alkaline batteries. Still no go.
I attached a USB mouse and looked at the Bluetooth preferences pane. I was surprised to see the Apple Wireless Mouse was listed there with status paired and connected. Still at this point switching the mouse off and on would produce blinking light on the mouse, but no functionality.
I tried various things in the Bluetooth preferences to see if I could get the mouse connection to restart. When I tried to delete the mouse connection there was an alert saying this was the only mouse connected, was I sure I wanted to disconnect. I said yes, but nothing changed in the Bluetooth preferences pane. I tried unchecking the Bluetooth “On” box, etc. Eventually I only succeeded in losing response to the keyboard as well.
I attached a USB keyboard, shutdown the system, and rebooted. I didn’t know if having the USB keyboard and mouse plugged in would interfere with the wireless devices, but it did not. After the reboot both the wireless keyboard and the mouse were functional again.
Since then I have tried removing the batteries briefly a couple of more times to see if the problem would recur. I actually put the rechargeable batteries back in. Both times the connection was remade as soon as I clicked the mouse. I also now have seen the Apple support article about setting favorite Bluetooth devices http://support.apple.com/kb/TA21371 . I'll try that if this issue comes up again.

Hi, is this a question" Post?
or are you just offering an insight into your Mouse Issue?
Generally and at times we all have little idiosyncrasies appearing with the running of our Macs.
I use the same Logitech BT with my MBP. MB & iBook..(not at the same time) Only ever had one issue
and the cure was to completely Delete the mouse from BT -> Repair Permissions & Reboot then Re Install the BT mouse..Ihave just put a new set of batteries in the Logitech (only 2nd set ever)...L

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TS3048 [SOLVED] after changing batteries: keyboard did not connect to iMac

After changing the batteries of my wireless keyboard, it refused to connect to the iMac.
It took me half an hour to discover that it was connected to my iPhone instead.
So if you ever created a BT connection on your iPhone, make sure it does not interfere with the iMac when you swap batteries...
I simply removed the BT connection on my iPhone.
Hope this helps others.

Please use Apple's Troubleshooting wireless mouse and keyboard issues located by clicking http://support.apple.com/kb/ts3048. Also it is wise to keep a cheap USB keyboard & mouse around in the event of bluetooth problems.

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I recently talked my mother into buying an Apple and used iChat A/V as the primary excuse. However, we are unable to connect on iChat (through AIM), like many others I have read about in this forum.
I am using a Motorola DSL modem, style MSTATEA and a Belkin Wireless G router.
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783.115517 @Video Conference/VCInitiateConference.m:1584 type=2 (00000000/0)
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Ok,
If it is this particular Motorola then it routes
http://portforward.com/english/routers/port_forwarding/Motorola/2210-02-1006/iCh at.htm
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The Main purpose for you though is the default access info so you can get to the Set Up pages.
Now as set up pages are never the same and can even vary from the same manufacturer it is worth checking all the tabs at the top and all the buttons on the right of this one and any links in the main section to see if it has UPnP
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The same site's front index page list many more Belkins than Motorolas.
Which model specifically do you have ?
Having two devices that route causes it's own problems for iChat.
Like you say you have done for the Mac you should set the Modem to allow Static Routing (Called Manually on the Mac) to the Belkin.
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Confirm Belkin Model.
Set up Belkin and Motorola/Netopia to be Static Routing
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4:47 PM Friday; May 8, 2009
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Unable to link keypad after changing batteries

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