24 Feb '12, 7pm

Is Your Electric Vehicle At Risk Of 'Bricking?' | Hybrid Cars

Polling the manufacturers about their opinion doesn't really answer the question. It depends on (a) the parasitic load of the battery management system when the vehicle is parked (determines the rate at which the battery will be slowly drained for that), (b) whether it can be allowed to shut itself off when the battery gets drained dangerously low, and (c) the specific battery chemistry (determines whether being fully discharged as a result of (a) or (b) will prevent a recharge). The EVs mentioned above are very different in these respects. Tesla uses a Li-Cobalt oxide cathode chemistry that does not recover well from full discharge, and has thousands of small cells that likely need continual management, which are liabilities on both counts. Nissan uses a more stable spinel chemistry and has fewer cells to manage, so probably does a bit better on both counts. The Mitsubish...

Full article: http://www.hybridcars.com/news/your-electric-vehicle-risk...

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