iPad 6 will show charge indicator but will not charge

I recently repaired an iPad 6 LTE iPad for a customer and noticed the iPad was stuck on 33% when I plugged it back it and stayed at 33% even though the charge symbol was present. It was an Apple charger and works on my other devices. None of my other cords worked either. I have seen other articles about charging chips being bad or blown, and I wondered if any of you had run into the same problem and have a solution. Repair was fine. Everything went well, and everything works except the charging. I do believe the battery was good before the repair, and the iPad hadn’t been opened up before or banged up a whole lot. Charge port on it was also clean and undamaged. My battery isolator pick stayed in the whole time as well. I didn’t feel any resistance when I put the battery screw back in, but the only other possible cause I could think of was some sort of debris or other thing stopping the battery from being fully connected. Just looking for some insight(and hoping it’s not the chip). Thanks!