The Gem HAS a charger relay.
TheGem HAS a disconnect. For both traction battery and aux 12v.
What profile do you have that allows charging? Afaik, only the one programmed in bmc will work. Unless bypassing charger relay.
And if you do that, why use a lead profile?
Yes, the Gem won’t allow charging until profiles match. As we stated earler.
Please share Polaris oem sw and profiles. They are not widely available.
For the ic1200 or quiq charge?
I was only summarizing what others have stated regarding how the late model systems work. Not sure you want to be going around asking about “Function 1” since it was a descriptive name, not a listed feature. Regarding how the GEM system reads the charger profiles it was speculated that they monitor the remote LED blinking pattern. If you are an electronics hardware developer with some software experience you could figure the connection out, build a spoof between the two systems such that it ‘blinks’ the correct stock pattern to the GEM control system when the charger starts blinking whatever profile it has stored. But it seems far easier to just bypass the charger relay as Dave mentioned.
@Inwo Yep, when I connect the charger now I here the two relay clicks which I attribute to the the GEM going through the handshake protocols. Before I wiped the charger with the file provided by Delta I would only hear one relay click and then it would sit there and wait. I was able to measure the pack voltage on the connection between the charger and the pack but it just wouldnt charge. To me this indicates that the first relay that was opening was between the charger and the pack but not the second one which would allow the charger to deliver the current.
After I wiped the charger and reinstalled the new profile I now get the two relays opening and it starts charging. I didnt have to jumper out the relays. The profile that I am using is profile #233 that is found here: https://support.delta-q.com/hc/en-us/articles/360052952391-Charge-Profile-Algorithm-List
This is all on the IC1200 charger that I put into the vehicle. It starts out at 18A and begins feathering down in the current as it gets closer to 55V where it shuts itself off. It was designed for Lithium-ion cells so it doesnt go through a floating portion.
As I mentioned, the GEM display shows that that battery is completely empty which is why I have a secondary SOC gauge.
Hopefully that helps some.
I think what the guys were saying above was that the BMC in the car actually controls that relay. It talks to the charger on boot and if the charger is not set to what it thinks it should be set to it will force the charger to change. If the charger does not comply and confirm this change, the BMC will not close that relay.
By wiping your charger of it’s previous set of profiles and installing only 233, it kills any chance of this charger-BMC agreement. Normally, something like this takes a visit to the factory to program another battery type into the BMC.
But this works? We should try to duplicate this in order to understand it better. Did DQ send you the 233 file? (that link you posted was for a LIST of available profiles and not the location to DL the actual file)
Or did you bypass that relay? ← which is probably why the Battery SOC display is no longer keeping track of battery state.
@AssyRequired Its the way the way that I ran the other pack for 4-5 years and is working so far on the new one. For the files you can download them here: https://support.delta-q.com/hc/en-us/articles/360015622311-Download-Algorithms-for-IC-Series-Chargers
This article tells you how to install them. The important thing is that newer USB memory stick will not work because you cant format them in the FAT32 format. You have to use a USB2.0 or older memory stick. https://support.delta-q.com/hc/en-us/articles/360015622531-IC-Series-How-to-Upgrade-software-and-Algorithms-via-USB
No bypass of the relay was performed. Maybe there is an additional relay/check that is occurring that I am not passing which prevents it from displaying on the car. At this point it doesnt appear to impact the operation of the vehicle.
Since it worked for so many years with that Delta IC1200 charger then that charger must have had the factory selected profile of the original DeltaQ charger. And as long as that stock profile was ok with your Lithium battery upgrade all was good.
If I remember correctly how the story went, you got ahold of a lithium profile which matched your batteries better, you wiped your Delta IC1200 charger of all profiles and installed just the one lithium profile. This is where your Delta IC1200 charger would no longer charge your battery and that was because the GEM could no longer change the charger back to the factory profile since you removed it along with all the others.
Here’s where it gets very interesting to a bunch of us here. It seems you found a profile or group of profiles to upload to your Delta IC1200 charger and now your GEM is happily finding the factory set profile and is back to charging. @AssyRequired was asking which specific link/profile/download you obtained which got you working again.
And I’d like to know if you have looked at the startup sequence of the Delta IC1200 charger and verified the profile it is using is or isn’t a lithium profile?