2010 Nissan Leaf EV - Click above for high-res image gallery

It looks like Tesla probably won't be alone in offering different-sized battery packs in its future electric vehicles. At a U.S. launch event for the Leaf electric car on Friday, Nissan product planner Mark Perry told Paul Eisenstein of the Detroit Bureau that the Japanese automaker is investigating a similar idea.

Lithium ion batteries are likely to remain expensive for the foreseeable future, so in a bid to make EVs more affordable, they could be offered with different battery capacities. Tesla is planning to offer three sizes for the Model S with ranges from 160 to 300 miles. The Leaf doesn't have room for a pack larger than the initial 100-mile range, but future models may be designed to accommodate larger packs while the base versions could come with a smaller unit.

Related Gallery2010 Nissan LEAF

[Source: The Detroit Bureau]