how long do the batteries last before replacement?
76930
I've had them and use for over 6 months and they still operate. How long they will continue to work is anyone's guess.
76931
I have no idea for sure. I've had mine for six months, and its as strong as ever. I'm sure its proportional to how often you "trip" it and cause it to alarm. Just sitting there it should not draw any appreciable current from the batteries.
76932
Sorry but I can't help you. The alarm wouldn't fit in the door frame we ordered it for and we returned it.
1896790
Not long, had to buy an extra 3 pack of batteries to keep on hand. Never leave home without an extra one.
500214
I'm not sure as I've never installed batteries. I've read they usually last two months or so.
251989
I use mine about once a month and have not had to change the batteries yet. I have them in for the past 4 months. Great unit!!!!!
2091437
I have only had mine for a few months and never turn it off. My husband has had one for over 2 years, never turns it off, and has never needed to replace the batteries. Supposedly they have a battery life of up to 36 months. Hope this helps.
1027150
I've been using mine for about 4 months and I haven't changed the batteries yet.Call the company .
1791547
You cannot replace this battery, at least without some electronics trickery. I have purchased three of these headphones and used the first two heavily for three years. They finally started falling apart and the battery life started getting bad, but I would estimate I wore each unit 3,000-4,000 hours before they wore out. I highly recommend them. Some might feel discomfort at first (due to pressure) but they conform to the shape of your head after a while.
672908
Greetings. Theoretically speaking, the batteries can last 100-120 hours. But it will also be affected by the battery type and usage. Thanks for your question.
1092729
Batteries do not last until expiration date on this brand. Usually are weak one full year before time. Testing at 1.0 volts or weaker 12-14 months ahead of time.
462877
Do you mean how many years before it needs to be replaced? Or, how long on a given charge? If years, I don't know but it should last longer than any lead acid battery. If you mean on a single charge, I haven't timed it but probably about 30-45 minutes for each battery (there are two).
804538
The button takes (2) 3V lithium batteries. Remove the back cover by gently pushing on the tab and lifting off the cover. The batteries are installed positive side up stacked on top of each other. They should last quite a while! 1-3 years in most cases, sometimes longer depending on use.
1001735
The battery can't be replaced by you. It needs to be sent in. As for how long they will last before replacement, i don't know. A long time probably. I've only owned one for a few months so i can't be the judge on that. But my friend has had his for a few years and he uses it a lot. His is still working fine on the original battery.
434009
Less than 4 hours for mine. The battery really does last a long time. I've had mine for several months and use them for up to 4 hours or more at a time, a couple of days a week. I have only had to charge them a couple of times so far. I am impressed with the battery in these.
112722
I have been using these at least a year, and have not changed batteries yet.
1330315
Have only had mine a little over a year, and I don't use it daily. The batteries still seem as good as when new. They hold a charge even when I leave them unused for a week or two.
2274349
I can't remember how the batteries are that came with them. I have some of these that are almost three years old and I don't think I've changed them more than twice. I have a few that are almost two years old now and one of them just barely started cherping a month ago. I'd say the battery lasts over a year at least. They last long enough that I haven't given it much thought.
550171
I haven't replaced them yet, but I haven't used it much either. I did have problems getting it to work when I first put batteries in it.