Chosen Solution

Hi All, 2 Days ago installed a new battery from Ifixit. And did the full charge and uncharge 4 times and did the SMC reset. But it seems that my battery drops from 50% to 7%. It is going strong until the 50% mark, I can show a diagram if needed. Anybody any clue what is going on? Greeetings, Valentijn

Sounds like you got a bad battery, contact iFixit for a replacement.