How long will a fresh pair of batteries 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.
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.
642293
Batteries (two of them) not dead yet. Not as good as new, though - not after 8 years of use.
136382
First time on a new battery about 4-6 hrs...after that about 1.5-2 hrs. Depends on the age of your battery.
1622218
Really couldn't say - I use these infrequently. I will use them nightly for a week or two, then turn them off. Only use them on dark winter evenings. Still using the batteries from last year, therefore. So - I will hazard a guess that they last a long time, maybe several months if not used daily.
2178282
I changed them after @ 4 mos....not bad, and I really don't how fresh the batteries were I put in in the first place!
1299646
The expected life span of these batteries is approx. 1 year give or take a few months. My last set lasted 2 years
1321777
I put fresh batteries in before a trip I took for 14 days & I ran it every night. The batteries are still good but I am taking an extra set of 4 with me on the next trip......just in case!
1577261
Generally lasts about 20-30 minutes of continuous use with fresh alkaline batteries. If you switch it off when not in use, you can get as much as 40 minutes out of it total.
852556
My batteries are still good. I would imagine the life expectancy depends on whether the lamp is left on continuously or intermittently.
1153731
My batteries like these (I have a few) have lasted well over a year. Average with daily use has been a year and half and more.
1809097
On the day that I received both, I immediately put batteries on them. I used the first one and stored away the other. The longest I've stored the other one before using it is around 20+ days. Didn't notice any difference in brightness compared with a newly replaced battery.Ideally though you won't store batteries in it for long periods of time (e.g. months or more) because of possible corrosion or battery leakage. Of course that also depends on the battery quality.
583430
I've had them HOLD there charge for 4 months of non use! up to 2 months of off and on use and for at the irish fest shooting and video taping 2 - 4 hours depending on how hard I'm going They do hold up well I cannot complain! Those batteries that only cost a few dollares and ya I've tried them! NO.....don't hold the charge for long and don't last that long either. I've had the cheapies go in 2 - 3 years you know freshly charged and Dead in 30 min.
1313276
My recent experience was: first set fresh batteries - just under one hour, second set fresh batteries - one hour 10 minutes. So, it will vary within a 10-15 minute range.
372037
I assume your hearing aids were designe dto take these batteries. If so, the will last approx 22 on a charge to begin with deppending on how strong the aids are. Then as all recharable batteries do, they will start to last less and less. When they do not last all day you should look at replacing these. They generally will last about a year but I seen them last between 6 months and 18 months depending on the number of hours you use them a day.
1859915
Normal 6 months to one year, if it is original batteries from box, it may not fresh as we need store it inside warehouse for a while, you may change it soon
456550
I have four of these, all installed since 9/2013. One of the batteries died after about 6 months, which kinda worried me, but the other three are still on the original batteries and still sound loudly when tested. So, 6 months to at least 17 months. These are nice little units, worth a few extra bucks for the small form factor.