I anticipate these batteries will improve very soon.
These mild hybrids are interesting when accelerating.The very heavy Volvo will throw you into the seat back and wheelspin up the road. Caught me out until i mastered my right foot after using a lower powered diesel.
I had not intended to buy a hybrid and there is no information in the brochure to say it was. I thought i was just buying a petrol car. Not found where they hide the battery yet so i will have a look tomorrow.