Any idea how long MAXIMUM the batteries last??
1546237
We have had six of these units in our home for over a year. We replaced all batteries after approximately one year. One unit is outside in the cold and heat and it's batteries lasted a year. The unit will give a little chime note every three or four minutes when the batteries need to be replaced.
1546238
I purchased these last year and just recently changed the batteries....so they last a long time with a good quality battery :)
492619
Hey bro...i just got mine yesterday and I've used it for so far 3 to 4 hours...and it works well...I'll make sure I put it up on exactly how many hours the batteries will last...
1926126
I have only used it for 4 to 5 hours straight after an overnight charge so have not tested the maximum use on a charge.
1390286
They last pretty long. Make sure you use quality batteries, like Duracell or Energizer. Don't forget to turn them off when not in use. I don't want to attempt to guesstimate how many hours, but we really don't have to change them often. If they start making funny noises, time to change batteries.
1447281
As I said in my original post, not very long. I tried multiple batteries from a 20-pack, and nothing would keep any of the three in pack lit for more than 10's of minutes. We went back to inexpensive moon lights, and haven't regretted it.
2202389
I have had mine for a few weeks now and it is still going strong. I dont use it everyday. I havent checked the price of the batteries yet though.
1699240
I put new batteries in last year after I first installed the lights. I am still using the same batteries. Usually I leave mine on for about 2 hours at a time. I've probably used mine 6-7 times so far with the same batteries.
1437034
I do not have an exact time that the batteries last. I can tell you that I've used it numerous times and haven't really had any issues with battery life.
101015
Yes, I was actually surprised the batteries lasted a month. Figured they'd get used up fast but not in this case. Really works too. Hope this helps.
1289167
I've had this for months but I don't read every night. It's still going strong for me. Just realize the batteries are going to have to be replaced eventually. If I had to guess, I'd bet the batteries would run constantly for 48 hours and still be useable.
100438
I've had mine installed for just under 60 days and the battery life still boasts duration until 2020. That's with all "senses" in use. Assuming that's accurate information, that would be awesome.
987696
We usually don't use ours for more than 90 minutes of continuous use. They could probably hit 2 1/2 hours with a decent battery, but it might be a stretch. I don't know if you need them to run continuously for the whole time, but we try to conserve power by turning them off when not actively in use. We're running them on Energizer rechargables.
319545
The battery I got didn't last too long. About 5 or 6 months. Perhaps a fresh battery would last longer though!
605614
I've had mine about a month now and I've used them for at least 20-30 hours while in the backyard on battery power. The sound is good, the range I am using is about 50 feet with minimal attenuating materials between (walls, doors, etc). I'm not sure how long the batteries will last. You can probably do the calculations based on average current draw and the capacity of C sized cells.
466254
I didn't do any scientific measurement. My opnion is therefore subjecive. It appears that these batteries do last. This key is to get them fresh. Batteries do lose power with time if you let them sit. Some lithium button batteries that I purchased on e-bay were two years old and lasted about a week in my guitar tuner, which is way too short. I blame it on the age of the batteries. Those 9 volt lithium batteries don't seem to have this issue. We'll see in a few years.
1830651
I can't tell you how many hours but I've had mine since May of last year and have only changed the batteries once. I have them on every night from about 7 to 12.
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.