[ad#post_ad]After years of speculation, General Motors has finally announced the terms of the warranty on the Chevrolet Volt's lithium ion battery pack; eight years/100,000 miles.

The 16 total kwh pack stores sufficient energy in a band from roughly 30% to 80% state-of-charge to propel the car for up to 40 miles at ambient temperature and with moderate driving style.

Since first working with the LG Chem lithium-manganese spinel cells in October 2007, GM has definitively proven their safe and robust nature. In these nearly three years of testing, GM has completed more than 1 million miles of driving and 4 million hours of validation of Volt battery packs, which include exactly nine modules and 288 cells.

“The Chevrolet Volt’s batteries have exceeded our performance targets and are ready to hit the road,” said Micky Bly, GM executive director, global electrical systems. “Our customers are making a commitment to technology that will help reduce our dependence on petroleum. In turn, we are making a commitment to our customers to deliver the highest standards for value, safety, quality, performance and reliability for an unprecedented eight years/100,000 miles.”

GM stresses the following key features of the Volt's battery that allow this unprecedented in the industry warranty:

Thermal Management: the intrinsic thermal management system allows the pack and car to operate flawlessly from -13 degrees Fahrenheit (-25 C) and as high as 122 degrees Fahrenheit (+50 C). In cold weather the cells are warmed by the generator and in warm weather they are chilled.

Diagnostics: there are more than 500 diagnostic tests on the pack that run 10 times per second. 85 percent ensure the pack is operating safely, 15 percent ensure durability.

Cell design: the LG chemistry ensures high power and long life.

Energy Management: by not fully charging or discharging the battery ensures the longest possible life.

GM is on track to deliver the Volt to customers later this year.

"We’re moving fast to deliver for the customer and ensure the Volt launch stays on track,” said Nancy Laubenthal, plant manager of the Brownstown Battery Plant. "Last August we announced the investment in the Brownstown facility and in January built our first completed battery pack. Now we are finishing pre-production batteries and soon we will begin building production batteries for Chevrolet Volts that will be delivered to dealers before the end of the year."

In addition to this battery warranty, GM is also offering the following additional warranties on the car:
  • 100,000 mile/5-year transferable Engine Limited Warranty (for Range Extender)
  • 100,000 mile/5-year 24/7 Roadside Assistance Program
  • 100,000 mile/5-year 24/7 Courtesy Transportation Program
  • 36,000 mile/ 3-year no deductible Bumper-to-Bumper transferable warranty
  • 100,000 mile/6-year corrosion protection

At 4PM Eastern you can ask questions directly of Volt vehicle line executive Doug Parks and Volt marketing director Tony DiSalle in the chat box below:

Webchat with Tony Posawatz and Tony DiSalle