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'[EE:] NiMH batteries - leaking?'
2004\03\21@140713 by Ken Pergola

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Has anyone had any *personal* experiences of leaking NiMH batteries?

I have not yet, but I'm just wondering if NiMH batteries are less likely to
leak versus alkaline batteries.

The reason I'm asking is this:

I've had an old home stereo remote control (non-replaceable) that has had
it's battery contacts slightly messed up do to leaking alkaline batteries in
the past.

I've now switched to NiMH AA batteries for the remote, and I was just
wondering and curious if they have the same propensity to leak as alkaline
batteries. I'm pretty sure I've read manufacturer's data on NiMH batteries
indicating that they can leak, but I just wanted to get some personal
experiences from people.

Thanks a bunch!

Best regards,

Ken Pergola

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2004\03\21@151920 by Anthony Toft

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> Has anyone had any *personal* experiences of leaking NiMH batteries?

No, I have never seen NiMH leak, but I also haven't seen alkalines leaks
either...

> I've now switched to NiMH AA batteries for the remote, and I was just

I have used them in the remote they are not very good due to their
discharge rate. You will find that the remote batteries are _always_
dead. I quit using them in my palms for this exact reason

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2004\03\21@183142 by Ken Pergola

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Anthony Toft wrote:

> No, I have never seen NiMH leak, but I also haven't seen alkalines leaks
> either...

Hi Anthony,

It can be pretty nasty (when alkalines leak). I had a cheap mountain bike
headlight gizmo that took AAs -- I left them in for too long because I
forget about them. A nice surprise awaited me when I opened up the unit --
had to throw out the headlight gizmo.

> I have used them in the remote they are not very good due to their
> discharge rate. You will find that the remote batteries are _always_
> dead. I quit using them in my palms for this exact reason

I've been pretty happy using them for remotes. I actually thought they would
not last that long due the X% monthly self-discharge rate, but I'm
pleasantly surprised.

Best regards,

Ken Pergola

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2004\03\21@222514 by Mike Hord

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I guess I've never seen one leak during use, but I had a couple burst
in the charger three or four years ago.  Had it plugged into a kitchen
outlet in our first little one room apartment, heard a POP while watching
TV but couldn't find the source.  Next day I find an odd little puddle
under the charger.  Ick.

So yes, I guess it could well happen.  I think, though, as others have
suggested, the rapid self-discharge rate makes it unlikely that they'll
burst simply by sitting in a device too long.  Also, I've had a number
just sitting around for a long time (25 or more) and none have leaked.
Probably pretty safe.

Mike H.

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2004\03\21@223135 by Ken Pergola

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Hi Mike,

Thanks for your comments Mike.

Best regards,

Ken Pergola

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2004\03\21@231735 by David VanHorn

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At 02:07 PM 3/21/2004 -0500, Ken Pergola wrote:

>Has anyone had any *personal* experiences of leaking NiMH batteries?

Contact me by direct email, dvanhorn at cedar.net

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2004\03\22@081051 by hael Rigby-Jones

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NiMH are definitely not recommended for this type of low current drain
application.  I suspect the lower capacity ones may not be so bad, but I
have 4 sets of high capcity AA's (raning from 2000 to 2300mAh) and I find
that they have little charge left in them after just a couple of weeks of
sitting on a shelf.  I would certainly go for alkalines made by a reputable
manufacturer in an IR remote.

FWIW I have had 1 AA NiMH cell leak, an older 1200mAh unit.

Regards

Mike




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2004\03\22@154810 by Ken Pergola

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Michael Rigby-Jones wrote:

> FWIW I have had 1 AA NiMH cell leak, an older 1200mAh unit.

Hi Mike,

Thanks.

Best regards,

Ken Pergola

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