blinking orange amber light and white on xps 15 9560

I've replaced a battery on my laptop recently. it was working perfectly but suddenly it keeps showing me 4 amber orange light and1  white light  . what should I do?? I replug the battery it worked fine for 1 or 2 days but then it started again and sometimes it shows me no battery detected. but sometimes it shows the battery is okay. no idea what kinda problem is that. even though it's showing me the pattern the laptop opens without direct power. but at that time the laptop runs really slow.