Battery box modbuild how to, USB+cigarette Lighter+voltmeter+switch added. wiring diagram reference.

Battery box modbuild how to, USB+cigarette Lighter+voltmeter+switch added. wiring diagram reference.

Decided to make my trolling motor battery more useful and functionally complete. Let’s build it up to add USB charge port, cigarette lighter socket, voltmeter, switch and a fish finder/GPS power port. I also included a electrical wiring diagram in case you are interested to build one.

Some reference info as below
Material and tools list
The 4in 1 ports and switch from eBay https://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338371560&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2F4-in-1-Waterproof-Car-Dual-USB-Charger-Port-Voltmeter-Cigarette-Lighter-12V%2F292480398080
The battery box is from Walmart size 24 to 31 type.  Here are the links to get them from Amazon seems more convenience. https://amzn.to/2ws3BOj
USB, switches and ports:  https://amzn.to/2wuohVX

My inflatable boat setup:
This is the pump I use to pump up the boat https://amzn.to/2vTigSr
The 12v SLA battery that I use with the pump https://amzn.to/2nKgSwT
My small 12v trolling motor https://amzn.to/2vM2Waj
The Walmart battery is dead, and I am using this 12v deep cycle battery for my trolling motor now. https://amzn.to/2OJlFtY
This is the very similar boat I have https://amzn.to/2vM2glh