If you have a battery temp sensor
Don't have one.
when my Trimetric went crazy
Never even considered that! It certainly provides a possible solution to a once only event as the inverter works fine now. I have been connecting/disconnecting the batts several times (cutoff switches) and maybe that little guy reset.
Anyhow, everything works fine except the charger so I'm going to bite the bullet and get another. I'll go with an inverter-charger rather than replacing just the converter as the box is 20 years old. Guess I'll get a Magnum. I need to do some research. The Freedom is a modified sine but I think I'll go with a pure sine. Expensive things; that's for sure.
Any recommendations on what to get if not the Magnum? Thanks to all.
jor