I followed your instructions and it ramps up all 6 lights then the bottom lights come on with the green light then the top battery light will come on for a few seconds then the lower red LED will start flashing 2 times.
I’m getting a fault code 520508 on the digital display on the dash.
I researched this code online and here’s what i found: A “520508” fault code on a 2018 GEM eL XD likely indicates a problem with the vehicle’s main power contactor and could be related to a potential recall affecting certain GEM vehicles, specifically concerning issues with the contactor’s functionality and potential for unexpected power loss.
I mistakenly mentioned in a previous reply that i had a charger fault on the dash when in actuality i read it wrong and it says “Veh fault” last night i was working in the dark and i thought it said “Ch Fault” when what it really said was “Veh Fault” my apologies.
I have a question. Does that relay that I replaced energize the contactor? Or does that relay have nothing to do with the contactor?
If it is the relay I think you are working with, It connects the charger to the battery when the BMC sees the car is plugged in.
That is why I wanted you to check it.
It might also be the one that connects the pony battery to the 12v supply so it keeps topped up.
Odd that you found the old one was melted? Is the socket damaged?
The socket was not damaged but the larger 2 wires of the 4 that go into the socket had the insulation torn off about 1/2” back due to the relay getting repeatedly hot. I plugged the charge cord into the charger and checked voltage to the 2 larger wires coming out of the relay and found 48 volts on one wire amd i was expecting to see that on the other wire but i’m not seeing anything on the other wire. I wont be back to work till Tuesday but i’ll post a picture when i get back
By the way, that relay is new as i just replaced it because it was burnt inside
The other thing you did that is going to be a problem later happens when you charge the batteries with an external charger. Sure- it is suggested as an emergency boost, but there are rules to be followed. You did not follow those rules. You created the perfect scenario to cook what is left of your batteries.
You created an imbalance in your batteries.
Yesterday you reported:
I charged 4 batteries last night and was reading 6.9 after the charger stopped
Then today you reported:
I hooked our battery charger to charge the other 4 batteries today until i was satisfied that the batteries were at least 6 volts.
This imbalance is going to be seen by the charger as one group voltage of 51.6. If the charger finally decides to run through a charge cycle, it will overcharge the high batteries, and the low batteries will never get up to full state of charge.
You need to spend some time charging the batteries so they are all within 0.1v of each other(or better)
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Wow. 4 day forum kill. Way to go buddy…