theoldwizard1 wrote:
unsavory wrote:
The other option I am exploring, is just disabling the smart charging in the Jeep by disconnecting the Intelligent Battery Sensor. But this causes the alternator to put out a constant 14.5v, and I'm worried this will actually OVERCHARGE my batteries... but I'm not sure?
DON'T DO IT ! The computer module is very smart and trying to trick it, is not a good idea.
Any idea what the potential repercussions might be? Everything seems to be working correctly with the battery sensor disconnected, other than the voltage just sits there at 14.7V instead of fluctuating with engine speed.
NRALIFR wrote:
I had to do some quick reading about this system as I’m not familiar with it. It appears that it replaces the OEM battery with two AGM’s that have a smart isolator between them, correct?
Yes, that is correct, and one of the reasons I would like to keep the Genesis system in tact, is that it has the cool ability to use the secondary battery to jump start the primary starting battery by connecting the two batteries together with the push of a button.
NRALIFR wrote:
What was the OEM starting battery? Flooded, or AGM?
The OEM setup was two AGM batteries. One of them, for the Electronic Stop Start system, was a tiny little AGM hidden below the main battery. It is used to run the accessories at a stop light. The problem is, if that dinky little battery fails, and they do fail prematurely often... the Jeep refuses to start off the starting battery! It's a horribly designed system.
Even though the OEM has AGM batteries, it seems the Odyssey batteries in particular are very finicky about charging profiles. More than any other AGM battery. They require no less than 13.8 V float charge, or they will self discharge even if the input volts are something like 13.2 - 13.4.
NRALIFR wrote:
If the OEM starting battery wasn’t AGM, you might consider reinstalling it as the starting battery, and selling or repurposing the AGM.
That's not a bad option I guess. Except the OEM battery will not fit anymore with the Genesis dual battery tray. There's no room for the OEM battery anymore. I guess I could replace the Odyssey group 25 starting battery with a different AGM that isn't as picky about how it's charged, but I also heard it is bad to mix battery types with the Genesis system.
LittleBill wrote:
i have to say im confused. this looks like a custom designed product for the jeep? an expensive one that's for sure? i find it hard to believe they didn't design for this.
I'm not sure they've had time to fully test this, since the JL Wrangler is only 2 years old, and the product was released I think less than a year after the JL's release. It could be that they didn't run into the issue with the Odyssey charging profile.
