Ken, I have never experienced an explosion related to battery 
recharging. I don't know what type of dry cell you're referring to, but 
I suppose under the right circumstances a gas could be given off that 
either ignites or bursts because of pressure buildup inside the dry cell 
case. I purchased my recharger precisely because it was advertised as 
compatible with "nonrechargable" type dry cells. Before purchasing I 
read everything on the website and after receiving the unit I read all 
the literature accompanying the unit. There was no mention anywhere of a 
danger of explosion. The only warning was that some "nonrechargable" dry 
cells were indeed nonrecharging, and also one couldn't predict 
accurately how many recharges one would get. But the claim that most dry 
cells of this type would in fact recharge well in the neighborhood of 4 
to 10 times or more has been supported by my own experience.

My father and uncle used to resuscitate defunct rechargable batteries -- 
I guess they must have been NiCads -- by zapping them with the hefty 
charge stored up in a large capacitor. They explained something about 
whiskers or crystals forming inside the battery that would prevent it 
from taking a charge, and zapping them would sometimes break up whatever 
it was that was interfering with the charge process. I don't know about 
dry cells exploding but I remember being knocked on my backside by a zap 
from one of those capacitors. You only do *that* once!

-- Christopher Witmer
Tokyo

Ken wrote:

> There is a warning on the label saying dry cell could leak or explode when
> recharged.  Did this ever happen to you.  What makes it explode.



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