How long do these batteries hold a charge when not in use? Will they last up to a week if charged and unused (for camping away from electricity)?
443066
Yes, absolutely. I've let them sit for a month or so between use and they still had juice.
443067
In my experience, if you put them away fully charged, I came back over a month later and they still had a full charge. I always leave the charging battery in the charger for a few extra hours after the charged LED turns green. Seems to work well for me...
443068
Yes, these will hold a charge. We usually use them as a backup for the battery that came with the camera so they usually sit for a few months before they are used and we have not had a problem.
443069
Absolutely. I had a fully charged battery in a drawer for a couple months. Popped it in at full charge and its still going strong a few hundred pictures later. I am really impressed by these batteries.
1218375
I've had these batteries for almost a year. I have two pair so that I can switch out the used with freshly charged and immediately put the used on the charger. Because I have a spare pair (which I HIGHLY recommend) I don't pay close attention to the exact time but I would say it generally is about 2 hours when I go back and they are completely charged. A second pair is very affordable and you are always assured that you will have a fresh pair when needed. I got a second pair as many reviewers said these batteries were unreliable and die after a couple of uses. I have had none of those problems. If you need a more precise time, I will be happy to check that for you. I've had these batteries for almost a year. I have two pair so that I can switch out the used with freshly charged and immediately put the used on the charger. Because I have a spare pair (which I HIGHLY recommend) I don't pay close attention to the exact time but I would say it generally is about 2 hours when I go back and they are completely charged. A second pair is very affordable and you are always assured that you will have a fresh pair when needed. I got a second pair as many reviewers said these batteries were unreliable and die after a couple of uses. I have had none of those... » Read More I've had these batteries for almost a year. I have two pair so that I can switch out the used with freshly charged and immediately put the used on the charger. Because I have a spare pair (which I HIGHLY recommend) I don't pay close attention to the exact time but I would say it generally is about 2 hours when I go back and they are completely charged. A second pair is very affordable and you are always assured that you will have a fresh pair when needed. I got a second pair as many reviewers said these batteries were unreliable and die after a couple of uses. I have had none of those problems. If you need a more precise time, I will be happy to check that for you. « Show Less
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.
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.
1810334
You need to recharge them until the little green light on the charger goes out. If you use them constantly (easy to do with a trimmer) they only seem to run a short time--20 minutes or so. I haven't tested my theory, but it seems that if I give them frequent, short breaks they seem to perform longer. (I use them in trimmer, chain saws, and drill.) Of course, if they're old they may just be worn out.
987696
We usually don't use ours for more than 90 minutes of continuous use. They could probably hit 2 1/2 hours with a decent battery, but it might be a stretch. I don't know if you need them to run continuously for the whole time, but we try to conserve power by turning them off when not actively in use. We're running them on Energizer rechargables.
2209658
I was actually interested in the answer to this as well. I've plugged a set into my 25,600mAh Anker power pack and they're still going strong after 36 hours with 30-40% battery left.
1471443
some batteries have not worked.I've only used while hunting for a few hrs. at a time and they have lasted a few trips.
2135019
Little more than 1/2 as long as if they were new. Beware though, you have to monitor batteries while charging. (check on them every couple hours) Some will unexpectedly leak and they can get quite warm while charging.
143550
hi, always rinse them off with water immediately when done swimming and never let the battery go below a 1/4 charge. Even when storing and not using for a while, you will want to make sure to keep the battery charged. Also, they don't last for ever and if you have a local battery dealer, they can make a custom battery for you that will last longer then the factory. This is just my experience with the unit. I hope you find it useful. Tim
2033659
i have used mine for about two and a half days before I had to charge them. but it really depends on how much you use them in one sitting
2172878
These batteries do not have a "memory" so they can be charged at any time. They do not need to be completely discharged before recharging.
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
1961336
I can't say. I always charge all my batteries before I leave home. These batteries showed no loss of charge after two weeks and lasted slightly longer, took more photos, than a one year old Nikon OEM battery. I can recharge from my vehicle lighter socket so beyond two weeks or a month is not important to me. Given their similar discharge rate in use, I would guess that the discharge rate in storage would be similar as well, but I can't say for sure.
924239
Yes, they are rechargeable batteries. I will say I wished they lasted longer. I think mine last about 1 hr when not hooked up directly to the outlet.
2040713
They are rechargeable batteries, like in a cell phone. It comes with a cord you plug in to charge it. Depending on usage, it'll last a couple days on a charge if used lightly. I use mine as an e-reader so it stays plugged in next to my bed most of the time.
1347155
These plug into an electrical outlet to charge up a battery. Once charged, they can be anywhere. They stay lit for at least 6 hours before starting to fade.