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Purchased a replacement batter from i fix it worked wel for a couple weeks now it won’t charge past 2 percent

You could try another battery to be certain, especially if you can get a known good one from another phone. However, it is very likely that your phone has a bad Tristar (U2) IC. No charging and fake charging are common symptoms. This is not a DIY repair. I would suggest that you find a qualified repair shop that does micro-soldering repairs and have them diagnose your phone.