Camera Battery Question

Seiko

Newly Enlightened
Joined
Feb 18, 2009
Messages
132
Location
Nevada
Hope this is ok to ask here......
My google skills let me down.

On my Rechargeable battery pack for my camera (canon 400D) It has 3 connections with symbols above them. + - and what looks like a T

What the heck is the T?

Ive been monitoring my battery voltage to see how long it takes to charge, and for the life of me couldn't figure out what that extra terminal was for.
 
The pack has a thermister in it enabling the charger to monitor the temperature of the pack.
 
Thanks guys!

Was driving me nuts. Not that its a far trip......
 
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