oooops, should be 'replaceable modules in traction battery' At SF Auto Show, a Nissan Leaf specialist told me the traction battery has modules, and indicated modules could be replaced years down the road, not the whole battery. How do you expect battery maintenance to unfold on Leaf 24 kWh pack? Would you replace 'modules' for a greatly reduced amount, in, say, 9 years or what? Wouldn't all modules degrade and you might want to replace the whole pack? Er, I dunno, I'm confusthed.