Should I be worried about the battery life in my PHEV?

My Outlander PHEV is three years old and has been an excellent car. I'm just starting to have a nag at the back of my mind about battery life and the consequent cost of replacement. Could I have your views...

Electric vehicle battery warranty

I recently bought a Peugot Ion electric vehicle, 3 years old but with very low mileage. I am generally delighted with the car but disappointed with the battery performance so did some checks to discover...