Originally Posted by jeffreymhardy
Snowman: Not sure which one I have -- it's quite the ordeal to get to it for me, lift the bed, take out everything in the storage there and then lift that compartment out but I do want to know so I'll do that later today. I THINK it had 9260 on it, but I'll check.
Scott: I'm having difficulty getting the Trimetric to come off of it's "---" for percent charged unless I reset it when I THINK it's fully charged. I'm going to call them today and go through the settings. As far as their unit is concerned, I've never gotten it fully charged even after 12 hours charging overnight when it was only down to roughly 20%. I would say my battery bank is probably 25 feet from the converter.
Mine did that too when I installed it as well. I can't recall what happened but once I started out on the road and it saw 14.5 volts from my alternator is declared the bank at 100% and then started giving me SOC in real percentages. The "---" is its way of saying indeterminate
I remember something from the manual about this as it doesn't have the data it needs when first installed. If you think about it, since it doesn't use the voltage reading to determine SOC, it is probably looking for a float charge voltage threshold before it decides that the bank is at 100% SOC and then starts SOC accounting from there.
I figured that, based on your floorplan, you had a long run from the converter as well. I measured the voltage drop from the negative converter terminal to ground and got something like .15 volts when charging at 13.5 volts and only about 10 amps. That would mean .3 volts total or more than 2%. I haven't yet chased the leads back to the battery bank to see why the negative isn't just chassis grounded in the rear compartment, but I want to drive as much current as I can with the generator running while boondocking. I will let you know what I find as I think that all of the rear converter floorplans suffer from this as well. I probably won't change out the 6 ga cable, but its pretty easy to ground the converter negative terminal to the chassis right in the back bay and eliminate half of the 6 ga run and half of the voltage drop in boost mode.