Tell me about A (amps) and mA

Question

Android

There are two chargers:

1. Original from Samsung Galaxy SIII:

Input: 100-240V ~ 50-60Hz 0.15A
Output: 5.0V - 1.0A

2. Charger from Bluetooth headset:

Input: 100-240V ~ 50-60Hz 0.2A
Output : 5.0V - 180mA

Question: can I charge the Galaxy SIII with a headset charger without harming the battery?
Just heard about several cases of battery explosion in the Galaxy SIII - SIV, I don’t want this to happen)

Answer 1

Charging from the Bluetooth headset does not have enough power to charge the phone. If it does charge, it will take a very long time.

Answer 2

180mA = 0.18A
This is 5.5 times less current than the original charger. As already said, it will take a long time.

Answer 3

And by the way, the headset can be charged by charging from the phone - nothing will burn, 1A will not “go” inside the headset, and the current will be slightly less than 180 mA.