which end of battery faces down in charger to charge battery?

[AC Question]

I have a tray to charge battery on. Dont know which end to face downward?

 

[B. Diddy]

Welcome to Android Central! That's going to depend on which phone's battery you're trying to charge. Usually, the battery contacts are aligned such that you can only insert it one way to charge correctly. Line up the contacts on the battery with the contacts in the charger.