What?
Yesterday:
It was working fine. Then all of a sudden smoke came out of the bottom near the light. Now it won't light up. It doesn't respond to the charger (the light stays red, doesn't blink green every 5 secs).
I found that it's not the light that's broken. It blinks 4 times upon metal contact.
Today:
Same thing happened to the other battery.
Different cartomizer.

Got them both a week ago.
Yesterday:
It was working fine. Then all of a sudden smoke came out of the bottom near the light. Now it won't light up. It doesn't respond to the charger (the light stays red, doesn't blink green every 5 secs).
I found that it's not the light that's broken. It blinks 4 times upon metal contact.
Today:
Same thing happened to the other battery.
Different cartomizer.
Got them both a week ago.