how long do batteries last?
1959278
Not long, mine usually goes about a month max. But been thinking about buying rechargeable batteries for it... Since it does get pricey. But the device does work wonderfully and does do as if says :)
1959279
I believe about 10 to 12 weeks. I like the battery opperated one better than the rechargable ( my adult children have those) and they lose their charge quickly and often only when you start to notice an odor is when you see its not working.
1896790
Not long, had to buy an extra 3 pack of batteries to keep on hand. Never leave home without an extra one.
1838279
I just change the batteries and don't bother with the other stuff. batteries last anywhere from 2 weeks to 3+ weeks depending on how much I use it.
33834
It usually last for 2 hours. You should be able to get a second Battery, even a bigger one.
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.
74799
It depends on your settings. If you have motion activated and long record times it will be shorter. I get 12-18 months on a set. Also I buy the batteries in bulk and they are surprisingly cheap. Never buy them retail. They have very long storage life.
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.
625763
depends on your weight. 3 or 4 hours for me when batteries were new, but unit is cheaply made and doesn't last long.
1326624
I does last for a long time....I bought mine in Feb. and it is still going strong...normally they are supposed to last 50,000 hours and I am still counting.
1590512
On a fresh set of 2-AAA alkaline batteries, I managed to get close to 50 hours of listening time, over the course of about 2 months. Completely blew me away. Before that, I tried a set of the more-expensive Energizer Lithium batteries, and I only got about 25 hours out of them.
2105314
I use the Duracell AA batteries and I believe it takes 16 total. They last quite a while depending on usage.
1912640
I don't know how long the batteries are supposed to last, but this seems unusual for them to die weekly. I ran mine last year for approximately 4 hours per week and unit battery still worked this year.
1898606
The batteries will last approximately two years when in standby mode. If the alarm is sounding continuously, the batteries will last approximately five hours. With normal use the alarm will not constantly be in standby mode or sounding continuously. Therefore, the user can expect the batteries to last anywhere from 3-12 months depending on how often the alarm is activated.
1555202
Approximately 8 and sometimes 10 hours if I leave them on and if I buy really good batteries. They are easy to turn off and on to save battery life and easy to change the batteries
1841746
The first set of Duracell batteries in one light on our front porch (activated a few times a night on average) lasted for four years. I had to replace them earlier this year so i don't know how long these second set will last.
1870074
On the higher setting, they probably lasted around 18-24 hours. On the lower setting, you could probably expect 24-36. We used them in Haiti and were pretty pleased with their performance. Ended up using half of the batteries that I expected to.
1928349
I am getting about 10-12 minutes per battery, but I charge them and then they sit for a week. You may get more time if you charge the batteries 12-24 hours before using them. Also keep them in the house if you live in a hot climate. Storage temperature may affect battery life. B&D; also claims the batteries reach full potential after 5-6 charges, but there is no empirical evidence of that.