how long do these last ?
1836205
Depending on the person, generally between 30 minutes and two hours (some traces of the effect sometimes last close to that two hour mark) I generally have it work perfectly for the first 30-45 minutes then it trails off by the one hour mark, though some of my friends have said it lasted longer for them.
428054
They lasted 3 months for me. Others lasted 1 month. I ues them daily with hot water.
291369
I had mine for 2 years. They come back year after year. A friend of mine has had them for years.
333015
They last a long time, I have some from a year ago. Of course one or two of them may not last, but over all they are good.
976151
They seem to last for a long time. I did not see any spots on them and I have had them for a couple of months. After this weekend, they are all gone.
1603061
I truthfully do not know. I do know that I do not change mine every 6 months. I would think that they last a long time as I have not seen any date on them.
2259949
At least a few months. I use them too quickly to find out, but I used a leftover box after about three months and they were good as new.
595937
I have had them last 5 years with just moderate use per day and up to 3 years with heavy use recharging twice daily..I also do rejuvenate them after that time to get an extra year out of them before I buy new
469154
I believe they are supposed to last for one year. I have been using mine for over 6 months now and it has barely changed in size.
167839
It's a little hard to say how long they last, But i feel I get a lot out of them because I do quite a bit of printing for both black & white and color. They seem to last quite long. I hope this helps.
1664617
There is a little variation with some but, on average, I would say about three weeks. I've used them for about a year in two separate locations in the house. Hope this helps.
2228599
They last quite a long time. I have had mine for over a year now. But it also depends upon how frequently and for how long of a duration you use it for. I only use mine on rainy / grey days and for 2-3 hours at a time.
1590514
It really depends on how much you use them but I can say that i use them for around 2-3 hours a day and with that frequency they last about a month.
540335
They're good for about three years. They only last about a week so that's plenty of time.
232791
when i first got for mine in the mail. honestly i really didn't check, but I'm sure they last awhile. these are just a sample.
372036
I have used these for about 4 years. They have been lasting close to 1.5 years. I have had no problems.
1246827
I don't know how often you use them but I have had some for up to 6 months and haven't any trouble with them. Hope this has been helpful. Thanks Bert