How many miles/months you have put since you or a technician rebuilt you hybrid battery? I have 5,200 mi/ 3 months since my rebuild and a total of 166000 mi. Still no triangle of death!
Every car is different... Depends on who's doing the rebuilding, as well as how much good or bad luck you have stored up.
I replaced 6 cells and have one I am monitoring - but have 7000 miles since my rebuild- still averaging 44mpg