zoomjay

Our book (and gas label) pretty clearly calls for 91 octane - which around here is premium (choice of 87, 89 or 93). I think my wife "cheats" a bit and goes medium grade some of the time.

btw, in case I am not clear... I am talking about the large HV battery in the back of the car - not the 12V battery under the hood.

My wife and I just purchased an 07 Lexus RX400h with about 65,000 miles. This is not the first Lexus we have ever owned although it is the first hybrid. Car runs great (although we are not thrilled with the premium gas required - a little "oopsie" after the fact). Question is on the "hybrid" or drive battery.

When we are driving the car the battery NEVER shows beyond 3/4 charged - no matter what sort of driving you do. I also understand that the battery pack is warrantied for 100K miles OR 8 years (just expired: darned). Is a 3/4 charge the most we can hope for or are we likely to be looking at bad cells?

Thanks