Charging Issue

I mistakenly put charging cable in both end, ow the power are blink but do not charging what to do.
I also tried to reset by pressing button for 30 seconds but problem stll existsj

Tell us what device you are taking about, please.

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Anker 10400mah
Model A1214G11
I found another issue, When the mobile is fully charged it is still charging.
Before this issue, power Bank stopped automatically at full charge.