| http://www.w3.org/ns/prov#value | - s between about 3:2 and about 400:1, between about 5:1 and about 50:1, between about 15:1 and about 30:1, or between about 18:1 and about 26:1. [0013] In another aspect, the invention features a battery including a housing, an anode in the housing, a cathode in the housing, and a separator between the cathode and the anode.
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