Dropped my charger, now my MacBook Pro 13" (Late 2012) is not charging, but the green/red light on the charger is working. What do to?

Please read follow all the instructions in If your Mac battery status is "Not Charging" including all the links at the bottom, followed by If your Mac battery won’t charge.

You can buy a replacement power adapter from Apple: Apple 60W MagSafe Power Adapter (for MacBook and 13-inch MacBook Pro)

The 85W variety is the same price, just bulkier, and it works exactly the same: Apple 85W MagSafe Power Adapter (for 15- and 17-inch MacBook Pro)

OWC sells genuine Apple power adapters at a generous discount: Apple 85W MagSafe Power Adapter For MacBook Pro 13-, 15- & 17-inch Models (non-Retina).

I do not recommend any other vendor, because counterfeit power adapters are very common and potentially lethal. For example if you buy one from Amaozon it's almost certainly counterfeit.

Green indicates it is not performing a charge cycle.

Amber indicates a charge cycle is in progress.

the LED is set by command from the computer.