Anyone tried using their samsung 2.0 amp charger?

Plugged my phone into a 2.0 charger from either b my s4 mini or my n3 before going to bed, woke up and phone wasnt fully charged. Didn't think anything of it, just went on my way. Now my phone just died completely went to use that same charger and didn't charge.

Downloaded a galaxy battery current charging app and it shows negative amperage when plugged into 2a charger. Also with the screen off it only shows one green dot instead of the trail leading to the battery.