With the exception of Toyota?s continued use of nickel-metal hydride batteries for strong hybrid electric vehicles (HEVs), the lithium ion (Li-ion) battery is now the de facto leader in batteries across HEVs and plug-in vehicles (PEVs) with electric drivetrains. Navigant Research anticipates that most new production HEVs and all PEVs will be shipped with Li-ion batteries in the coming years. While the market for Li-ion batteries for vehicle electrification is just beginning to develop, several companies have emerged as leaders. The most successful Li-ion battery manufacturers to date are large and financially stable companies or subsidiaries of these types of companies. Additionally, the leaders provide Li-ion batteries to multiple markets, such as the consumer electronics and emerging stationary grid energy storage markets. In terms of energy capacity, Navigant Research expects the global market for Li-ion batteries for light duty consumer HEVs and PEVs to grow by a 2015-2020 compound annual growth rate (CAGR) of 31.9% to 61.3 GWh. The majority (72%) of demand for Li-ion electric vehicle (EV) batteries is expected to come from battery electric vehicles (BEVs) due to the larger battery packs typical of those vehicle types. This Navigant Research Leaderboard Report examines the strategy and execution of eight leading Li-ion battery manufacturers that are active in the light duty EV battery market. These players are rated on 12 criteria: vision; go-to market strategy; partners; production strategy; technology; geographic reach; sales, marketing, and distribution; product performance; product quality and reliability; product portfolio; pricing; and staying power. Using Navigant Research?s proprietary Leaderboard methodology, vendors are profiled, rated, and ranked with the goal of providing industry participants with an objective assessment of these companies? relative strengths and weaknesses in the global Li-ion vehicle electrification storage market.