Chosen Solution
After replacing my iPhone 4s battery, the new battery does not charge. Has anyone had this problem and how did you remedy it?
@bigfella , BERNIE , Was the old battery still accepting some charge? Recheck battery connection and reseat to be sure there is a good connection and no wires pinched or damaged. Look in the charge port and blow/pick out(carefully) any dust/debri that may be causing an issue also look in the port for any bent pins and straighten very carefully with a tooth pick. Try a different compatible charger/cable to verify this is not the issue. Return battery as faulty as it is not taking a charge. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
@bigfella besides the great points that @lpfaff1 is making about checking your replacement battery, I suggest you also check the following should it still not charge. Start by checking 3 inductors. For that, of course, you need a multimeter, or at least an ohm meter, to check for continuity. I hate to refer to those as fuses, but they most certainly control part of the charging circuit. First one is reference designator L3, it is a FERR-120-OHM-1.5A inductor. L4, right below it , has the identical value. Next would be the charger inductor L28 2.2UH-1.8A-155MOHM. All of these are pretty much available at mouser. com or digikey.com. Of course your issue may not be related to those, but could be caused by a bad dock connector, or a totally discharged battery. I suppose you can check the components anyway. Hope this helps, good luck.
