Hi,
I have a Samsung A40. After some months it wouldn’t charge via its Brick (2A Samsung Brick/transformer). It would only charge by USB on my PC. Later i found it would also charge from an Alcatel 2A Brick and an Alcatel 1A Brick. It soes not charge using my XIAOMI 3A brick.[br]
Using the AccuBattery app, it seems that the Alcatel 2A Brick produces 1.7A. I tested the 2A Samsung Brick on my XIAOMI and it produces 2.1A. It seems that the Samsung A40 will charge if i use a power source that produces less than 2A.[br]
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Hope that this helps.