BT Mighty Mouse and battery consumption

[thomasp]

I have a Bluetooth Mighty Mouse and have had it for 3 months (Christmas present). Last week, I noticed one bar had disappeared in the mouse battery life window in System Prefs - "wow" I thought "only lost 20% charge in just under 3 months".

However, yesterday, I got a "Low Battery" warning and noticed that only two bars were remaining. A couple of hours later I got a "Critical battery level" warning and only one bar remaining.

I don't use my mouse all that much - probably at most 6 hours per day (in short-ish intervals, turning it off in between) and I can't remember accidentally leaving it on. I'm using it with the two original AA batteries it shipped with.


Is this normal battery consumption? I find it strange that from "Low battery" to "critical battery" would be a couple of hours and that it would suddenly lose almost 50% of its charge in a week.

Do these mice eat AA batteries? Is it a good idea to get some rechargeables to use instead?


Cheers for the help 🙂

 

[epochblue]

Is this normal battery consumption? I find it strange that from "Low battery" to "critical battery" would be a couple of hours and that it would suddenly lose almost 50% of its charge in a week.

Do these mice eat AA batteries? Is it a good idea to get some rechargeables to use instead?

You got 3 months out of it? That sounds about right. I typically don't get too much more than that with my BT MM. I use the Energizer Lithium or Energizer Titanium batteries and hardly ever turn the mouse off (unless I need to resync the mouse for some reason), and I typically get about 2-3 months out of them.

I get more life out of my BT Keyboard, but it doesn't have to send nearly as much data to the PB as my mouse does.

 

[thomasp]

Thanks for the reply.

It just seems strange to me how quickly the battery charge dropped off - within a week I've gone from 80% to 20% (assuming the "bars" in System Prefs are equally sized)

 

[thomasp]

With regards to using rechargable batteries in the BTMM, what value of mAh (Amp-hours) should I be looking for? Will 2200 mAh suffice, or is it better to go for 2500 or 2800?