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Topic:
nimh rechargeable batteries
This thread has 3 replies. Displaying all posts.
Post 1 made on Sunday January 12, 2003 at 16:47
eisey
Lurking Member
Joined:
Posts:
January 2003
4
Is it a problem to use nimh rechargeable batteries in radio shack remotes?? I have seen a rechargeable warning on the OFA site and believe that they make the radio shack remotes. I have two radio shack models 15-2104 and 15-2116.

Is there any problem using rechargeables??

Thanks,
Mike
Post 2 made on Sunday January 12, 2003 at 17:31
johnsfine
IR Expert
Joined:
Posts:
September 2002
5,159
I use rechargeable alkaline batteries in most remotes. Occasionally I use Nicad batteries. I've seen all the warnings against rechargeables in many devices, and always ignored them and not had any problem I could attribute to that.

I think nimh batteries are a bit expensive for use in a remote.
Post 3 made on Monday January 13, 2003 at 14:57
DLF
Long Time Member
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Posts:
January 2003
10
Ive been using NiMH for a couple of years in my OFA 8080 and now my new RS 2116 with no problems at all. I share 3 pair of AAAs betw. the remote & my Palm IIIxe, at a total battery cost of <$20 (not counting charger).
Post 4 made on Monday January 13, 2003 at 15:15
johnsfine
IR Expert
Joined:
Posts:
September 2002
5,159
I forgot to mention earlier that some UEI remotes have low battery detect logic. Common rechargeable batteries are Nicads. Nicads are very tricky to do low battery detect on. A device designed for low battery detect on non rechargeable alkaline batteries has no hope of getting the low battery detect even close for Nicad (most often and most annoying it reports low batteries as soon as even a small fraction of the full charge has been used, so you get a low battery warning almost all the time). Even a device designed for Nicad batteries has a hard time doing decent low battery detect.

Rechargeable alkalines have very similar low battery characteristics to non rechargeable alkalines, so typical low battery detect logic will work OK. Rechargeable alkalines are also practical and economical to use in a remote.

NiMH batteries have complex low battery detect issues, different from either alkaline or Nicad. I don't know how consumer NiMH batteries affect the low battery detect in a 15-2116. I guess from DLF's experience it must not report low battery too early by much (or DLF would have noticed). If it reports low battery too late, that may be a non issue since you might be in the habit of recharging before the low battery report anyway. (I don't know if Mike is even planning to use them in a remote with low battery detect).


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