Question about battery charging

[Baggins]

I have started using a 510 and am very enthusiastic about the "vaping" thing. I have already killed one vaporizer and am watching the moding threads for someone to make a bulletproof vaporizer.
I am very curious about something reguarding battery charging manual batteries. The battery seems to be set up so the "shell" is negitive to the battery, and the small center button goes positive when the switch is pressed. When I put the battery in the charger, it goes "red" and charges.
But it does this without the switch being "made". There seems to only be the two terminals in the battery connection, not a third "straight to battery" connector of any kind. So how does the charging current get through to the battery when the manual switch is open?

 

[Wireguy]

Never thought about it. I would guess either the chip allows direct access to the battery or a simple diode on the leg with the switch.

 

[Houdini]

Right. Here's what it looks like inside. The circuit allows current to flow in past the switch.

 

[PorcherRae]

I was curious about that too. Thanx for the pic - now I don't have to take one apart (that's a bad habit) to look at it.

 

[Baggins]

Nice Picture! Now I too, can bypass taking one apart to see whats inside. I would guess the diode bypass would work, though there will be a slight voltage drop.

 

[Houdini]

Yeah, the switch was stuck in the on position on that battery and nothing I tried would fix it so I figured I'd tear it apart. It was saturated with juice and I guess that fried the switch circuit. It is (was) an M401.