How long will batteries last if device is left on?
602709
Sorry to say, the ultrasonic bark control only worked on our dogs after one bark. Then the just ignored it
1368462
Don't know actual battery life on device(never kept track) but probably not going to last long enough for what you want.
1313534
I don't believe there is a way to tell until the transmitter and/or receivers stop working. The batteries should last a long time though. We have devices that use the same battery and they lasted at least two years, in most cases more than that long. Hope this helps.
1768663
I'm not entirely sure on that. But I've been using mine for a 3-4 months and haven't replace the batteries once. I use it on the go, so I turn mine off between uses, but I have forgotten to turn it off from time to time meaning it's on for 24 hours or so. Still have not needed new batteries though. Hope this information is useful.
570177
That depends on many factors such as age of battery, outside air temperature, and extra weight due to add-ons. In general, you can expect between 6 to 8 minutes. It's very important to notrun the battery down below 3.70/3.74 volts per cell.
360764
As with anything that uses batteries, it won't last forever. I only used it for a couple hours one day and had no issue.
574538
There is a manual switch on the device which must be turned on and off manually yes, as would any other device of this nature. Remember that turning your device on and off saves your battery power. You would have a range of 20 hrs. before recharging. Download the user manual in pdf format and read what it can and cannot do.
470166
I leave mine plugged in all the time until needed, then plug it in again. Doesn't seem to effect battery life as I've been doing this for over a year and I still get up to 6 hours of light.
680776
I'm not sure, but quite a while. I ended up leaving mine plugged in overnight.
1717482
the light stays on as long as the charger has a flashlight in it and is plugged into the wall. The batteries last about three to four years. Sometimes the batteries develop a memory of a short charger and then they are done.
179013
Depends how long you leave it on. If you leave it on all night, probably a couple of weeks. It gets dimmer as the batteries die.
437744
I'd say mine lasts just under 3 hours at the lowest power levels. The battery is easy to remove, so you can always buy a second battery to double your life.
2248593
I leave mine plugged in all the time when not in use. The battery hasn't been a problem for me.
1670974
I have had about 10 hours of continuous use on the device with the backlight on. It is a great unit, but carry spare batteries because you go from low battery to no battery quickly.
1237264
I've never had mine die on me but I've taken it for a six hour trip and it had about 25% battery power afterwards so I'd guess maybe about eight hours in total.
234752
i am not sure..i would guess at least 3 years... As for how long the battery would hold a charge: Depnds on how you use it...I had the wifi on and was playing a 3D game for 2 hours with full display brightness and after 2 hours i had 40% battery left...i got tired of playing so I am not sure how much longer it would last.....you could set the display brightness to 50% if you are just browsing the internet and it may last 3 hours with wifi on.....
199040
The owner's manual states that leaving it on charge is not a safety concern, but it can shorten the battery life. They recommend not leaving it on charge for extended periods, 30 days, if it is not used. If you are using it regularly there should be no problem leaving it on charge.