How long does the battery last? How long does it stay on for?
1977695
I use it for stretches of a few minutes to a few hours. I do not turn it on and just leave it to collect data. I've had it for a few weeks and the original battery is fine. One thing to note, in order for you to collect data from the sensor, your phone needs to be on with the app running in the foreground. It does not collect data on its own for later download. Or at least it doesn't seem to when using the iOS app. Hope this helps answer your question.
195761
I'm not totally certain about the battery life. I left mine on using it here and there through the day and it well into the evening before I had to plug it in again. I also know that I left in sleep mode for over a week and it still had about 70% battery left it. It impressed me how long it would hold its battery power
662765
I tend to keep mine on power save, it seems to last pretty well. I'm not sure and exact answer on a number but several hours.
1082709
It is just on and off. It has a lot of battery life also. I haven't run it down yet.
1777136
It stays on for as long as you want it to. Just remember to keep it filled with water. It depends on the speed setting you have it set on, on how long it runs for, obviously if you have the setting on high it could last up to a day.
1912423
Hi! The battery lasts a ridiculously ling time! I used it nightly and used it for several cycles each night, and the battery lasted well over a month on a single charge
358190
The battery will last for 10 hours, but only when kept at a moderate volume. If you crank the volume up near max, the battery will last about 5 hours.
1811661
I really haven't tested the battery life per say.....but I have had it on for more than two hours with the battery still holding charge. Hope this helps.
194402
I would guess several hours, I didn't keep it in constantly after a charge, but using it 20-50 minutes at a time a few times a week, it lasted over a month for me.
65168
If the battery is fully charged, it should last for about 6 hours. This is a rough guess based on my using it for about a week, a short time each day, before needing to recharge the battery.
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.
2155490
Usually the battery last between 4 to 6 hours. Just make sure you don't drain the battery. When you see that the battery is almost gone, charge it to prolong the battery life.
1833570
It lasts for about 20+ minutes, but I don't use it for long except for short sessions. Please note, it's best when the battery is allowed to drained and then recharged to prevent memory effect. Most folks set it back in the charger which is the worse thing you can do.
934607
Well, it depends how long you keep it on. In general, It lasts at least 9-12 hrs in a day when it's on, but if you use 'sleeping mode', it would be more than one day(at least one and a half day you don't need to charge it). Hope it helps.
1039285
More than 2 hours actually. I left mine unplugged running at max brightness overnight to see how long the battery will last. I was up for more than 5 hours before falling asleep and it was still running. Light at max wasn't as bright compared to when it was plugged in though. There's most likely a circuit preventing the battery from over discharging as it turns on then off for some time still before I plugged it back in.
635038
I have had mine for about a month. I always forget to turn it off so I cannot tell you how long the battery lasts because I have not needed to recharge yet.
403108
Let me say befor my answer that this gadget is really awesome ...IT IS battery operated.....how long does it last?. It depends on the way you use it,I do not keep it going for long periods,and still works fine.but if you keep it on for several nights it will go on for several days,as for the batteries ,it needs 3 small rounded ones.TAREK