Using the OBDII port on 2014 Genesis Sedan as an access point for charging with Maintenance Charger

[OlderGuy1stGenesis]

I ''think'' that my 2014 Genesis has a OBDII port that allows battery charging. NoCo sells accessory adapter cords that will allow maintenance charging. The model I plan on using puts out 7 1/2 amps max. Unless I ran the battery flat, it would probably rarely charge over 3 amps. I read but am not sure that that port should handle 10 amps.

Do we have any Hyundai mechanics or folks that have gone this route ? One of the reasons I wanted to do it this way is that it would be a fairly clean way to access the battery and this model Noco can also supply the constant voltage necessary keep from losing presets and other computer memory.

 

[Kraig Wilkinson]

I ''think'' that my 2014 Genesis has a OBDII port that allows battery charging. NoCo sells accessory adapter cords that will allow maintenance charging. The model I plan on using puts out 7 1/2 amps max. Unless I ran the battery flat, it would probably rarely charge over 3 amps. I read but am not sure that that port should handle 10 amps.

Do we have any Hyundai mechanics or folks that have gone this route ? One of the reasons I wanted to do it this way is that it would be a fairly clean way to access the battery and this model Noco can also supply the constant voltage necessary keep from losing presets and other computer memory.

On my 15 5.0 I hard wired it to the fuse block under the hood. Positive wire to the positive side on fuse block. Negative wire to the negative jumper post uder hood. Turned out nice and clean. All I have to do is open hood half inch to plug in the leads!

 

[Kraig Wilkinson]

On my 15 5.0 I hard wired it to the fuse block under the hood. Positive wire to the positive side on fuse block. Negative wire to the negative jumper post uder hood. Turned out nice and clean. All I have to do is open hood half inch to plug in the leads!

On one of the positive posts in fuse block I put wire over top existing nut and installed another nut over it, there is enough threads to do so! And with negative I removed the one bolt 10mm head right next to negative jumper post. I used good ring terminals and soldered them, along with some good electrical friction tape/fabric electrical tape. Very clean look . And being that I am hooked up right next to main battery cable dont worry about melting wires from too many amps/too much draw!

 

[Kraig Wilkinson]

I ''think'' that my 2014 Genesis has a OBDII port that allows battery charging. NoCo sells accessory adapter cords that will allow maintenance charging. The model I plan on using puts out 7 1/2 amps max. Unless I ran the battery flat, it would probably rarely charge over 3 amps. I read but am not sure that that port should handle 10 amps.

Do we have any Hyundai mechanics or folks that have gone this route ? One of the reasons I wanted to do it this way is that it would be a fairly clean way to access the battery and this model Noco can also supply the constant voltage necessary keep from losing presets and other computer memory.

I can maybe shoot you a couple pics tonight if you would like?

 

[edizzle89]

how long do you plan on letting the car sit? most batteries in decent shape should be able to sit for at least a month and still be able to keep presets/computer memory and start the car.

Personally I'd do what Kraig did and wire the leads to the under hood battery posts, then there's no need to worry about charging the battery through a wiring system that was never made to charge through. Something like this one with the ring terminals and simple plug.

 

[Kraig Wilkinson]

how long do you plan on letting the car sit? most batteries in decent shape should be able to sit for at least a month and still be able to keep presets/computer memory and start the car.

Personally I'd do what Kraig did and wire the leads to the under hood battery posts, then there's no need to worry about charging the battery through a wiring system that was never made to charge through. Something like this one with the ring terminals and simple plug.

View attachment 25706

That is what I was thinking, you maybe can charge the battery from the obd port. But I would not for there are too many other important wires there, and I agree with edizzle89 , the obd port is not designed to charge battery. My car sits for up too 6 weeks sometimes and I found the car likes battery tenders actually all my vehicles that sit. Especially the ones that are in a unheated garage. It has been going down to minus 5degrees where I live.

 

[Gunkk]

Do not use an OBD2 port for charging the car battery.

Direct attach to the battery terminals or jump-terminals up front is the best way.