How long do they hold a charge in storage?
1265303
I don't know. I am very disgusted with them because of low voltage. Below D cells.
1265304
Not the best but good enough. I use in a trail camera and have a smart charger as in that use they only last about 3 days of heavy use, 300 pictures with flash & day & night infred pictures. I have a high traffic count.
1312899
I have found that the more you use these batteries the better they respond, if you use them infrequently and don't charge them at least once a month they loose their ability to hold a charge in a year. However, if you use them and charge them once a month when they don't get used, then 3 to 4 years.
247072
They will retain their charge for several months if they are not used, and not stored in the camera. If the battery is stored in the camera, it will lose its charge in about 1 week -- apparently the camera (at least my S570) draws some current even when the camera is shut off. I suggest to take the battery out of the camera if you are not using it. How many pictures a battery will take depends on many factors -- like whether the flash is used, how hard the auto-focus has to work, size of the images, etc. With the flash off, and using full resolution jpg images, I can get at least 1500 shots on a battery charge. They will retain their charge for several months if they are not used, and not stored in the camera. If the battery is stored in the camera, it will lose its charge in about 1 week -- apparently the camera (at least my S570) draws some current even when the camera is shut off. I suggest to take the battery out of the camera if you are not using it. How many pictures a battery will take depends on many factors -- like whether the flash is used, how hard the auto-focus has to work, size of the images, etc. With the flash off, and using full resolution jpg images, I can get at... » Read More They will retain their charge for several months if they are not used, and not stored in the camera. If the battery is stored in the camera, it will lose its charge in about 1 week -- apparently the camera (at least my S570) draws some current even when the camera is shut off. I suggest to take the battery out of the camera if you are not using it. How many pictures a battery will take depends on many factors -- like whether the flash is used, how hard the auto-focus has to work, size of the images, etc. With the flash off, and using full resolution jpg images, I can get at least 1500 shots on a battery charge. « Show Less
81509
I charged mine for 24 hours before using them. They work great! I have noticed that when they are not plugged in they only stay charged a couple of hours.
1654299
I fall asleep with them on, and the charge lasts at least eight hours with the volume on a low setting. I have never left them on longer than that, and I recharge them each morning.
1662403
They are dated with a time stamp saying how long they will retain the full charge they were shipped with. Upon inspection they needed charging when I received them....
1071454
Depends on how you [ab]use them. If you often run them all the way down, and/or run them down only 1 or 2% and back up to 100%, they may last less than a year (or only take half a charge after a while). If you seldom run them below 30%, and don't recharge until they're 90% or less, they may last 5 years or more.
1733672
I always keep an extra battery charged and they keep quite a while, I have had them stay charged for a week or more, I usually use them by that time but I have no idea just how long they will keep, I have one that I keep in my car for another camera and lord knows just how long I keep it, of course it doesn't stay fully charged but enough that I can use it for quite a while.
159303
Haven't let them go fully dead. I normally recharge every 15-16 hours. They always last from one charge to the next. No problems with life.
1446625
I am going to say probably 4-5 hours on average if they get a good charge during the day. I now need to replace the battery in one of them, but I have had them for about 4 months. The others I have are still going strong.
316032
I cannot answer that fully. I have not left them on long enough for them to lose charge. I have the manual at home. So I would guestimate 15 hrs? Maybe more, maybe less. Best bet is the manual, what it says, but if you don'g actively correct them for a long period I would think it would hold charge a little longer
89647
Charge them over night and you will be fine.... Now how long do they last is another question haha
53995
I am not qualified to say how long the batteries will last based on your description but would assume based on my past experience that they will have a fairly long life compared to other style batteries. Unfortunately they are not rechargeable.
876452
Honestly, I can't remember for sure whether they were charged prior to using or not. I think they were, but it's been a couple years since we purchased these so I can't say for sure. I do know that they don't ever hold their charge for a very long period of time.
867089
I dnt know about ten hours but I have used mine in a 8 hour work shift and when I got home to charge then the charge very quickly like they didn't need of a charge they hold a charge very well
1817389
As a general rule, I would try and charge the battery at least once every 30 days, but not more than 60. The longest I have let my battery be stored between uses is about two weeks, and the batteries never lost their charge. I really like these batteries as they last longer than stock batteries.
126586
There's no real way to tell, and they don't have a set life span. After some time they will simply hold less and less of a charge, and they will need to be recharged more quickly and frequently. This is why I recommend the Nikon branded battery - the unbranded batteries I've owned all suffer from this problem very quickly.