TL;DR: Use a Dongar Technologies Dashcam Power Adapter 10-pin Type H for Nissan for a wire-free setup. It taps the mirror power directly, avoiding the...
Commenting to find later
I also got CTEK MXS 5.0, works well.
For your situation, I'd say safety is the big concern here—you don't want a heavy gym bag becoming a projectile if you have to slam on the b...