Nextbase Dash Cam 322GW battery. Fits Nextbase NBDVR322GW. You can however do it without having to disconnect the screen. If in doubt about how to do this, there are videos on YouTube showing you how to do this task which I would suggest you look at before buying.
eBay
eBay
Nextbase 322GW Dash Cam. Nextbase Series 2 Cable Accessories. Rear Window Cam. Rear View Add-On for Front Cam.
eBay
Its integrated magnetic power connectors allow you to install and remove your dash cam easily. Follow the included user manual or the video installation guide on the Nextbase website for clear step by step instructions on how to set up the powered mount.
eBay
A used Nextbase dashcam. Does not come with the charging/power cable, but is a normal MiniUSB cable available cheaply online. Works fine as far as I'm aware, but hasn't been used in years.
eBay
NEXTBASE 322GW Full HD Dash Camera - Black
eBay
The 522GW is fitted with an inbuilt polarising filter to dramatically reduce windscreen glare and reflection to produce enhanced recordings. The 522GW is the world's first 1440p Dash Cam with Alexa built-in.
eBay
NEXTBASE NBDVR222 Dash Cam - Black
eBay