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Kathy Radford
BetterPhoto Member Since: 1/2/2006
kathyradford.com
 

What is the lifespan of rechargeable batteries?


I'm trying to find out what the average livespan is for the rechargeable batteries. Mine are a little over 2 years old. It seems lately they don't seem to stay charged as long as they used to. Kathy in NH


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7/12/2006 10:53:18 AM

 
Carolyn  M. Fletcher
BetterPhoto Member Since: 10/6/2001
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  I don't know if it's true or not, but I've been told they will last longer if you let them run all the way down every time before you recharge instead of just doing it when they get a little low. If anybody knows if this is fact or fiction, please weigh in!


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7/12/2006 11:27:18 AM

 
Kathy Radford
BetterPhoto Member Since: 1/2/2006
kathyradford.com
  I run them in the camera until the camera shuts down. So they are always dead when I recharge them. How long have you had yours? Kathy in NH


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7/12/2006 11:29:51 AM

 
Michael H. Cothran   It's not the age in years that affects rechargeable batteries, but the amount of times they are recharged. Nothing lasts forever, but I would venture to say that you should get a few hundred charges from a set.
Here's something else you should know - there are now two types of rechargeable batteries - the old ones were Nickel Cadmium (ni-cads), and were very fussy. They had a memory like an elephant, and unless you used up the entire charge before recharging them, their charge would lessen each time. So, it is possible that you may have ni-cads, and if you have been recharging them before their charge was all the way used up, this could be your problem.
The newer type of rechargeable battery is a Nickel Metal Hydrate (NMH). These purportedly have no memory, and you can recharge them at any time. I have 8 of them, which are 4 years old. Truthfully, I don't feel like they are holding a charge very long either, and it could be because they are just getting old.
Bottom line is there's really not much you can do about the matter other than buy new ones. If you use your batteries regularly, they may need replacing every few years.
Michael H. Cothran


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7/12/2006 11:31:27 AM

 
Kathy Radford
BetterPhoto Member Since: 1/2/2006
kathyradford.com
  I run them in the camera until the camera shuts down. So they are always dead when I recharge them. How long have you had yours? Kathy in NH


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7/12/2006 11:32:51 AM

 
Kathy Radford
BetterPhoto Member Since: 1/2/2006
kathyradford.com
  I run them in the camera until the camera shuts down. So they are always dead when I recharge them. How long have you had yours? Kathy in NH


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7/12/2006 11:32:51 AM

 
Kathy Radford
BetterPhoto Member Since: 1/2/2006
kathyradford.com
  I run them in the camera until the camera shuts down. So they are always dead when I recharge them. How long have you had yours? Kathy in NH


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7/12/2006 11:32:52 AM

 
Dennis Flanagan
BetterPhoto Member Since: 12/31/2005
  There's a terrible echo in here.

I venture to say they are getting old and should be replaced.


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7/12/2006 11:44:09 AM

 
Michael H. Cothran   Kathy - you state running them in your camera until the camera shuts down. On the surface, one would think that the batteries would be dead at this point, but they are not. Cameras require an enormous amount of battery juice to run. You'll find that your batteries still have a lot of juice in them, once they no longer can run your camera. Insert them in a flashlight or similar item, then let the flashlight run them down the rest of the way.
BTW - this is only an issue if you are using nickel cadmium batteries. As I stated earlier, if you are using newer nickel metal hydrate batteries, they have no memory, and you can recharge them at any time - you do not have to run them down as you would a ni-cad.
Michael H. Cothran


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7/12/2006 12:20:44 PM

 
Carolyn  M. Fletcher
BetterPhoto Member Since: 10/6/2001
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  Thanks for the info, Michael! Good to know!


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7/12/2006 2:11:19 PM

 
Kathy Radford
BetterPhoto Member Since: 1/2/2006
kathyradford.com
  Michael they are NIMH batteries. I think it's probably time to replace them. I do use them a lot. I appreciate all the info on them, very informative. Dennis I agree with the echo. I kept sending it and it said done but I wasn't getting the conformation that it went through so I kept sending it. Sorr about that. Kathy in NH


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7/12/2006 3:47:54 PM

 
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