Phone reboots after clipping screen back in

Hello all,

I recently did a battery replacement on my iPhone 6s, and its been working great until i clip the screen backi n. After doing so the phone reboots, and after rebooting settings show that the iphones unable to determine battery health. This happens 5-10 mins after i clip the screen back in, and the battery health comes back upon disconnecting and reconnecting the battery, and remains working until i put the screen back in. What's the problem here and what do i do to solve it?