Camera batteries for flashlights ?

[1 what]

As a result if inheriting a number of camera batteries I was thinking of using them to power some "different shaped" flashlights. The issue is that I did not "inherit" a charger to go with them. Since I have Pila "intelligent" charger I was thinking of using that but the issue is that the camera batteries have 3 terminals. 1 +ve, 1 -ve and one unmarked between them.

Anyone able to tell me how to charge this from the 2 terminal Pila charger.
Note: I'll be out of contact for the next week so will review this when I get back. Thanks in advance.

 

[Fallingwater]

That's for the control circuitry.

Crack open the casing and rip the cell out; that has only two terminals and you won't have trouble charging it.

 

[VanIsleDSM]

It's probably a thermistor output for temperature sensing. Just leave it blank.

 

[Fallingwater]

Thermistors alone are usually present in NiMH batteries. In my experience, LiIon ones always have circuitry in them.
Come to think of it, I can see no very good reason why the circuitry couldn't be in the phone/camera with only the thermistor in the actual battery casing, but every single phone/camera LiIon battery I've dismantled had circuitry in it.