HOw often do the batterys have to be changed??
296980
Depends where you install them. Think of them like a flashlight. If you turn on a flashlights for hours everyday it will need its batteries changed fairly often. One that you only use for a few minutes a week might only need new batteries every year or two. If you use these as under cabinet lights they would need more battery changes than areas where not much motion activates them. However, LEDs consume very little power. I have them in a safe that does not get opened very often... so I may only have to change them every five years or so... hope this helps.
296981
I use Duracell Rechargeable Batteries in my lights. The light that gets the heaviest use because the dog sets it off at night all the time lasted about 3 months. The other light that just gets normal use still has the original batteries after 4 months now.
296982
It all depends on how often the light is activated. In standby mode a set of alkaline cells can last for about 2 months. I use rechargeable batteries (Sanyo eneloop or equivalent) so I never have to waste money on desposable batteries. I have one unit in a busy hallway and I need to recharge my batteries once every 3 weeks of so. More frequently in winter time (because it get dark earlier).
296983
We just changed the batteries for the first time since installing them the first weekend in September. They were the batteries that came with them so not sure if fresh ones will last longer. We replaced with rechargables.
296984
I received these lights 3 weeks from this message and installed them on the same day. So far the batteries are going strong. So I'm not sure exactly how long the batteries will ultimately last.
1001278
You can use it as many times as you want. The battery is the only thing that needs to be replaced. My battery lasted roughly 2 months of HEAVY usage. The device will let you know that the battery is low when maybe 5% charge is remaining.
436691
They typically last 6 months. It depends on how much you use it. I change mine every 9 months.
1786186
I have not had to replace batteries more than once a year - and mine turns on and off once a day all year.
2170143
I bought the first one 2 years ago, so far the battery is working well. My brother charges it once a month and uses it every other day! Not yet need change the battery, but I guess when ist is gone, the only way is to replace to a new one, after all, it is only 20 dollers after sale.
824242
I have had two of these units for 5 or more years and neither has required a battery change. The battery is in the switch only, not the part that plugs into the electric. I use one of them (the one in the pantry) several times a day so they must not use much power. The battery is only used for an instant when you switch it so should last for a very long time.
1786187
Have had a set of batteries (alkaline) in, for over a year, and it still functions fine. However, I would suggest changing them every year, or so. Beats coming home to a dark porch/front door.
41271
I've had mine about a year and have not replaced batteries. But it depends how much you use it.
1156654
I use mine about once a month. Never had any issues with the battery and I have owned it for over a year.
1963018
I've never replaced the batteries. We've had it at least 3 years if not longer.
770666
I have had mine for 3 months and have used it once or twice a day since then. I just changed the batteries in it today. So depending on you use I would say 2 to 3 months.
301148
Mine about every 24 hours of use but that was with regular battery. Better ones would last longer.
25986
Battery life is pretty good (I think). I don't actually keep a record of battery changes, but my impression is that I must change batteries about every 6 months. I carry an extra in my golf bag because unlike someone else said, there seems to be little warning that it is about to quit.
1330432
Their literature says that the batteries and the sensor should be changed once per year. I have owned these instruments about 25 years and have found that every 2 years is just about right. I google, ( and now Amazon ) look at price and then buy
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.
9092
I can't say over the long-term, but I have had mine for three months, I use it everyday for hours at a time, and I have not yet had to replace the battery.
2227077
So far, we have had to replace the batteries on our unit roughly every 3 to 4 months.