Chosen Solution

Hi, just for clearance, I already contacted EU customer support, so here’s my problem. I bought a battery replacement for my macbook pro 13 retina 2015 from iFixit EU store, battery model is correct A1582. Just arrived, I opened my macbook and tested the battery without removing the old one, just to not take apart a very glued battery and discover that new battery does not work. Without power mac doesn’t start, with power red charger light comes up, booting is starting but process does not complete itself and restart again. I also tried to reset SMC and PRAM but same. By reinstalling my old battery the boot process goes fine. Is iFixit battery defective?

OK, lets do this lets disconnect the battery following this guide MacBook Pro 13" Retina Display Early 2015 Battery Replacement follow the steps to Step 6. Then carefully hold the power button down for a good minute. Then plug in the MagSafe charger the system should spontaneously startup. Is it stable or is it still rebooting on its own?