This is a OEM battery replacement from same manufacturer factory who made for OnePlus 3 . Same as original quality with our Mifan quality warranty. Producing date may vary from different batches but performance will remain the same.
This offer is without any fixing or installation service , we will only ship you the battery and you need to manage installation by yourself. In case you don't know how to do it , suggest check youtube video before placing order.
All lithium batteries are very active material if you damaged the battery packaging. We suggest you let professional person to do the job. Don't use any sharp or metal screw driver to pry the old battery , it will damage the battery and cause fire easily .
OnePlus 3 and 3T are equipped with different battery model , don't mix use.