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[OM] Re: OT - One for our resident battery expert

Subject: [OM] Re: OT - One for our resident battery expert
From: James R <londonjames@xxxxxxxxxxx>
Date: Mon, 25 Aug 2008 08:53:00 +0100
Chuck and Moose:

I should have used a brighter light when I looked at the tiny embossed  
type on the charger - it's 7.2 - 14.4v. So clearly a 12v car battery  
ain't going to do much.

James


On 24 Aug 2008, at 23:24, Moose wrote:

> James R wrote:
>> It's a holiday weekend and a few jobs on the flat need to be done.  
>> My trusty cordless drill turns out to be poorly. I apparently can't  
>> get a replacement battery for it for much less than the cost of a  
>> new unit so I searched the net for a remedy and came up with this...
>>
>> http://www.instructables.com/id/Revive-Nicad-Batteries-by-Zapping-with-a-Welder
>>
> Well, it was at least entertaining. I wonder if I kept the dead  
> battery
> pack from my drill...
>> ... Trouble is it's a 12v drill, but as the charger puts out 7.2v  
>> maybe it would?
>>
> Have you considered that the trouble may BE that "the charger puts out
> 7.5v".  I'd check it again. If it is only charging a 12v battery to  
> 7.5
> v, you would indeed have a drill acting like it was feeling poorly.
>
> If you have no other chargers, (which seems unlikely on this list) a  
> car
> battery should be safe. Putting 12v across a 12v battery should be  
> safe
> for the simple reason that that's what the charger is supposed to do.
> It's not like the 31v the video uses.
>
> Moose
>
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