Powering Beaglebone Blue off a 4s battery 14.8V

Hello, I’ve been powering the BBBlue via the power jack and all of a sudden it just stopped working. rc_check_battery reads 16.7 on dc jack but 0 on the pack and cell. Maybe similar issue as this post: Can I power BeagleBone Blue servos and DC motors by DC jack?.

Anyone know how to fix?