How long do two AA batteries last powering the unit light?
500214
I'm not sure as I've never installed batteries. I've read they usually last two months or so.
500215
I connected a switch and only turn them on while I am away. Lasted about 2 months.
500216
I would not put batteries in them as that indicates its fake. Real ones do not have that light
500217
Mine lasted about 8 months. But they slowed down in winter. Still look great
1906180
It takes 2 AA batteries and my battery life has gone for about 2 years without ever turning mine off. I have left the batteries in and the switch to "on" the whole time and it has taken 2 years to require replacement.
929686
About an hour. I only use that when its needed. It is so bright that it looks like a helicopter light! Normally I don't need that much light. the saver setting is still quite bright as well
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.
1596161
I haven't had to change the batteries yet and the light doesn't get that all that much use since I have it outside over a shed door opening. I've had the light since early in the summer so it's been approx. 4 months. Sorry I'm not more help.
233582
one AAA battery, replace the handle and slide the ridged button up to illuminate the long-lasting LED light. (LED light lasts for 8 continuous hours, or 100,000 hours if used only intermittently.)
728007
Requires four AA batteries, which came with my light. Installed at Christmas time and still working fine, and it is turned on two or three times a week.
2265911
I used to get 2.5 hours but I've now had the light for a couple years and am getting 1 hour. So I ordered another one just now. The light still works great, I'm tempted to take the battery "pack" apart to see what it is and maybe go buy some replacement batteries for it.
520272
I use the light for 1 to 2 hers at a time during orchestra rehearsals 1 night per week and church services on Sunday mornings. 1 set of batteries has lasted for about 3 months and I just had to replace them. I think the info that came with the light said they should last about 10 hours of continuous use.
1292900
My light stays on as long as the unit is plugged in and the battery is attached. I just let it charge for 10 hours before removing. That seems to work. It would be nice if the light went off when it was done, but I donlt think mine does...
1563026
2AAA batteries, not rechargable. I do wish the light wouldn't shut off so quickly.
756696
Should be about 3 yrs. Runs on 2 common AA batteries. The unit comes with 2 energizer lithium batteries.
1595411
Two AA batteries. They last about two-three months if you are a twice a day brusher for the two-minute timer on the brush
1955184
Each of the two lights is powered by two CR1620 lithium button cells. A light will give close to 10 hours service off one set of batteries before it begins to gradually dim. The bad news is that it is extremely hard to replace the cells. It may be easier to throw the thing away and start over when the batteries run down. BTW, you don't really need to use both lights at once because you can only use one eye at a time (see the reviews for more info). Your question has prompted me to try to actually change the cells. After I sort out a procedure, I'll add it to my review, which is under the name "The Experimentalist." Each of the two lights is powered by two CR1620 lithium button cells. A light will give close to 10 hours service off one set of batteries before it begins to gradually dim. The bad news is that it is extremely hard to replace the cells. It may be easier to throw the thing away and start over when the batteries run down. BTW, you don't really need to use both lights at once because you can only use one eye at a time (see the reviews for more info). Your question has prompted me to try to actually change the cells. After I sort out a procedure, I'll add it to my review, which is under the... » Read More Each of the two lights is powered by two CR1620 lithium button cells. A light will give close to 10 hours service off one set of batteries before it begins to gradually dim. The bad news is that it is extremely hard to replace the cells. It may be easier to throw the thing away and start over when the batteries run down. BTW, you don't really need to use both lights at once because you can only use one eye at a time (see the reviews for more info). Your question has prompted me to try to actually change the cells. After I sort out a procedure, I'll add it to my review, which is under the name "The Experimentalist." « Show Less
852556
My batteries are still good. I would imagine the life expectancy depends on whether the lamp is left on continuously or intermittently.
1736154
The unit takes (1) NP series battery at a time. Battery life will depend on the brightness setting of the light. A lot more cost effective than feeding it AA batteries! Hope this helps in your purchasing decision.
828859
Since this light uses an LED bulb you can expect 5 hours out of the 4 AA batteries it takes to power it. The bulb itself will give you 100,000 hours or about 10 years of use out of it just keep enough batteries on hand and you'll be fine