What is the battery life on this one? Does it have to be turned off when not in use?
1688982
No need to turn off when not in use. Battery will last a few weeks at full day use.
1385111
I do not turn it off. It would save on batteries if I did. I've had to replace the batteries once. You will know when you need to replace them because the mouse will act funny.
2248593
I leave mine plugged in all the time when not in use. The battery hasn't been a problem for me.
1533817
2 hours. Maybe 2 1/2. Be careful when you "close it" or pause it, because it doesn't turn off and will run the battery down.
1235968
I leave it off most the time. Has couple hrs before I have to charge. Never timed but at least 4. Works good for me.
195763
I haven't done a test (like running movies for hours to clock the battery life), but I would say about 6-7 hours of use. I use it a lot, but only need to charge the battery every 2 days or so. No battery gets used when it's off, either (I know that sounds silly) - for example, I had charged it fully and the. Had it in my bag for 3 days before taking it out to use it, an the battery was still charged to 100%. So far, great battery life. Hope that helps.
2038747
It doesn't have an automatic shut off so if you turn it on it'll just go and go until the battery goes dead. I'm not sure how many hours of battery time it's good for but I've left mine on all night long on several occasions and it's still going strong!
1364413
Battery life is about three hours on constantly . I know this because I used it this long while recently tracking a deer in the rain
2143971
Battery life. Turn it on setting 5, leave it on for 3 yrs is what they claim. I personally turn mine off when not in use. 123 wouldn't even last a month.
1780450
I just recently bought my 2nd one for another computer because my first one is just that great! I've had it for about 9 months & I've only replaced the batteries once. I have both at work & are always on the "on" position. If you're thinking of buying one, the battery life should not be an issue! Good luck!
1251601
The batteries just run the light which has a high and low setting so it's going to depend on your use habits. I turned the light off when the party was over. Did not seem to be a problem!
723070
I had my first one for nine months before it died. The thing is, I never turned it off and now I'm doing that with my new one. I know it goes into 'sleep' mode after awhile but I believe it's still better to turn it off if you're not using it for a couple of days. Also, they come with a year guarantee so this time I'm going to try and not lose my receipt.
366950
The battery lasts around 4-8 hours on full charge so you can leave it on till it dies, I don't believe it goes to sleep if inactive.
1082709
It is just on and off. It has a lot of battery life also. I haven't run it down yet.
1485746
Yes, it has an off/on button. I turn it off when I open my windows during the summer. I have had this for several months and the battery is still working. I am very happy with it.
116011
Yes, it automatically turns off after between 15 and 60 minutes while on battery if there's no activity, depending on the situation.
1166761
I haven't actually timed it, but I've been able to use it quite a bit without recharging. I use quite a lot on Sundays and for hours at a time on other days of the week. Takes several days before I have to recharge. I have been impressed with the battery life.