The original adapter has the following info:
Quote:
INPUT: 100-240V~ 50/60Hz 0.8A
OUTPUT: 5V-3A/ 9V-2.66A/ 12V-2A
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So as pointed, any decent power adapter capable of delivering over 3Amps at 5V should work. Since you asked for models, I am using my Motorola Z2 wall adapter (Model SC-28) without any issues
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The problem that some people have is with
Quick Charge technology (Qualcomm) which changes the voltage to charge it faster.
I am not an expert on the subject
but when I understand the Boox devices do not deal well with these charges, they are not compatible.
Maybe the newer QC 4 and 4+ version work, I don't know.
I think onyx should really make it clear about the specifications, and if it's compatible with QC, etc.