Re: Battery Explosion

From: N:dlzc D:aol T:com \(dlzc\) (net_at_nospam.com)
Date: 12/28/04 

Date: Tue, 28 Dec 2004 06:56:58 -0700

Dear FrogEye:

"FrogEye" <saviour998@hotmail.com> wrote in message
news:1104217933.988747.265880@f14g2000cwb.googlegroups.com...
> I've noticed that many instructions for appliances say that you
> shouldn't mix battery brands together. However, quite some time ago I
> was out of one brand, so I had to mix two different brands together.
> Now I went to look at the batteries, and both batteries of one brand
> were exploded, with acid crusted all over them, while the other
> batteries were fine. Does anyone know why this is?

Different ages, different discharge histories, finally different amperage
capacities. Batteries have internal resistance. Internal structural
differences (brand), and electrolyte system differences (alkaline, Ni-Cad,
etc.), can affect the internal resistance.

I would assume that the device you accumulated the batteries into was
fairly high current... I would venture to guess that the two "weak
sisters" had high(er) internal resistance, and simply baked.

If you can keep the duty cycle short, or create a battery pack that was
gangs of batteries in parallel, you might be able to survive a few weak
members.

David A. Smith

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