I have been using a MacBook charger for about 6 months, and now I tried to use another one which I have used before with this MacBook.
Now, the battery is low enough that the MacBook can’t start, but only display the battery icon on the screen.
When connecting it to the power, the charger led turns green, then red (signaling that it is charging) and finally, turns off (after about 15 seconds).
I tried cooling down the MacBook and the charger, and after that I tried recharging. It did work for a longer time, but then the behavior explained above appeared again.
Why is this happening? How can I fix it?
The other charger does work. This charger stops working once the MacBook is started (or woke up from sleep).