| 41. | Energy densities equivalent to lithium-ion batteries have been achieved.
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| 42. | Its theoretic energy density was 19 Wh per liter.
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| 43. | Volumetric energy density was over 20 Wh / l.
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| 44. | O'Sullivan agrees : IBM projects that progress in battery-energy density will level off after 2001.
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| 45. | That makes them unsuitable to run a car alone, but they have excellent energy density.
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| 46. | Does the Higg's field have an energy density?
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| 47. | Fluence or energy density is another important consideration.
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| 48. | Only changes in the energy density are observable.
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| 49. | Where is the energy density in the vacuum.
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| 50. | The Li-air battery can exceed this energy density.
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