Re: [NTLK] MP2100 battery thermal switch part replacement

From: Adam Goddard <pashosh_at_tpg.com.au>
Date: Tue May 01 2007 - 10:41:17 EDT

On 01/05/2007, at 10:29 PM, Martin Portman wrote:
> Thanks, but I think my panic is over. I just hooked up an ohm
> meter, heat
> gun and
> IR temp sensor and verified that the thing works. At 15 degrees it
> had
> about 0.7 ohms
> resistance. As I heated it up, it went up slowly, by a few tenths
> here and
> there, and
> then around 50 degrees it suddenly shot up, to over 1K. I'm
> assuming that's
> expected behaviour. Please tell me if it isn't !!
This is the correct operation of the polytemp. 50degC is a normal
cutout point for battery packs. They just clamp the incoming current
down to a fraction of what it was until temperature reaches
acceptable levels again.

Regards,
   - Adam Goddard

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Received on Tue May 1 10:41:26 2007

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