Replaced Battery not recognized

Just replaced my battery with a battery purchased from ifixit. However, my computer doesn’t seem to be recognizing the battery. From system report and coconut battery it shows that no battery are installed. I’ve tried all the troubleshooting methods like NVRAM /PRAM reset, SMC reset, repair disk permission but nothing has worked so far. It’s not the charger’s issue since a green light appears when plugged in. As well switching back to the old original battery, my computer recognizes it and shows that a battery is installed. What else can i try? Is it the battery’s issue then?