USB port wired to battery question

WesRJ86

WesRJ86

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Stringer, MS
Anyone here have a USB port that they have wired to be hot all the time? The 12v/cig lighter is only hot when the key is on or the jeep is running. I've already bought a dual USB port that says 5v and 2.1amp per port. I would like to be able to switch it on anytime. I think all I need is the port, a switch, and a 12v to 5v converter. Possibly a 10amp fuse between the battery and converter? Anyone done this or have any info that I may be missing? Thanks.
 
I have a two pairs of USB chargers wired to constant power. I just connected the two wires. They provide constant power. :)
 
Did you go straight from the port to the battery? No 5v converter or fuse? This is what my port looks like.

20190609_144749.jpg


20190609_144803.jpg
 
I have two of those. Both are fused, but no converter or switch of any kind. The oldest one is going on 5 years of being continually on.
 
What size fuse did you use? Did you go straight to the battery? Sorry for so many questions ha.
 
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Wesrj86 said:
What size fuse did you use? Did you go straight to the battery? Sorry for so many questions ha.
Click to expand...

Maybe a 10a fuse on each. Yes, directly to the battery via an auxiliary fuse box. But you can just just as easily clamp the +/- wires to their respective posts on the battery with a pair of vise grips.
 
Wesrj86 said:
Did you go straight from the port to the battery? No 5v converter or fuse? This is what my port looks like.
Click to expand...
If those are designed for 12v, then they drop it down to the 5v that you want.
 
@jjvw awesome. That's pretty straight forward. I'll just add a 10amp in line fuse. Everything I was reading said I needed to a converter to go from 12v to 5v. I guess the port itself has a built in converter? Is that what you are saying @dbbd1?
 
Awesome. Thanks guys I really appreciate it! I'm planning something a little different to install the port into over the next week. I'll post pics when I get it. Thanks again.
 
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