The 2010 Ford Escape Hybrid and its sister vehicle, the Mercury Mariner Hybrid, will be using a smaller, lighter nickel-metal hydride battery with 20-percent more power sourced from the development of the Ford Fusion Hybrid/Mercury Milan Hybrid. Improved battery chemistry will allow the battery to operate at a higher temperature while staying cooled by cabin air. Other benefits from continual hybrid vehicle development include a variable voltage converter, smarter climate control, electric air conditioning compressor, an enhanced electronic throttle control, and a more efficient regenerative brake system. Fuel economy remains unchanged for the Escape and Mariner pair at 34 city/31 highway.
Source: Ford