Trolling Motor Small Battery case

A trolling motor, usually need a powerful battery to operate.
I wanted to have a reserve battery, just in case.
So I added a small 15AH battery ML-15-12 (standard size).
This box will enclose the battery, I put 2 holes, one for the trolling motor connector, and another to have a 12V outlet for accessories.
If you want you can drill a small rectangle and add a battery voltage and charge meter, not he cap.
I also added (optional) a TPU base protector, so the case doesn't scratch my tender.
Here the links for the connectors I Used for my Minn Kota

Female Connector:
https://www.amazon.com/dp/B01J60IUCE?ref=ppx_pop_mob_ap_share

DC outlet:
https://www.amazon.com/dp/B07FVQ51CX?ref=ppx_pop_mob_ap_share