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i have an ipad mini 4 that was having trouble turning on and was not charging, so i replaced the battery with a new one from ifixit and just installed it. ipad is working fine but will not charge it is staying at 18% for the last 30 min of charging. i have tried multipul different oulets, cables, bricks, ect. but nothing changes. it seems like it is not getting enough juice to charge, but just enough to keep it on.