Slingstudio cameralink

Description

It stopped powering on one day after I let the battery drain fully. The red light on the back still illuminates when plugged in to a power source but the unit does not turn on. I’m assuming this is a bad battery.
Also, I’ve opened this up to peek around inside, but I snapped the plastic clip when prying it open, so it no longer stays firmly snapped together when closed in place.
This may be a simple fix for a local electronics shop, but I’ve moved on from sling studio to ATEM mini