I installed a Trimetric 2030 in my single battery truck camper a couple of weeks ago and once I charged the battery it seemed to be working fine as far as I could tell......at least the % full indicator read out OK and it seemed to add & subtract amps.
I have the Trimetric P1 set at 14.2, the P2 set at 02.0 and the P3 set at 260, which I think should be correct for my 2 new group 31 Crown deep cycle batteries.
Now, since I added a second battery I can't get the % full to read anything but three dashes and I am starting to rethink how I wired the second battery up and if it is going to work how I now have it. I am not sure the Trimetric problem is related to how I have it wired, but after rethinking this I don't think the Trimetric is going to record amps in and out from the truck correctly they way it is now wired. After watching the Trimetric voltmeter some when the camper is plugged in, I think the charge voltage may not be getting to the 14.2 volts required to reset the % full and this may be why the Trimetric is not resetting to full%.
This would be a lot simpler if I knew how to draw a diagram and post it here, but I don't know how to do that so I will try to explain it as best I can. I added the second battery inside of the box of my truck ahead of the fender well in the front corner. I have 2 ga. pos. and neg. cables coming off of one of the truck batteries with the + going to a 60A circuit breaker and then to 100 amp rated relay controlled by an ign. wire. The positive and negative cables run back and both are connected to the added battery through a HD 200 amp plug mounted to the bed side. Then from this battery I have a pos and neg running back to the camper battery. The positive cable from the added battery is connected to the positive post on the camper battery. I tried connecting the negative cable to both sides of the Trimetric shunt and neither ways seems to work. After thinking about it, I am starting to think that I am going to have to bring the neg charge cable from the truck directly to the load side of the Trimetric shunt, completely bypassing the added battery and connect the two batteries together by themselves. I think the way I have it now any charge amps from the truck is going to be going directly to the battery without being recorded by the Trimetric.
Does this make any sense and sound correct?
Thanks!
2009 Lance 845
2021 Flagstaff 529RLKS 36'6" fifthwheel
2006 Dodge Ram 2500 Cummins
19.5 Rickson wheels with Michelin XZE tires
Air lift bags with 72000 wireless onboard air
Hellwig Big Wig rear sway bar
Rancho RS9000XL rear shocks
Torqlift tie downs